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char = e;code = 101
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char = i;code = 105
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char = i;code = 105
char = c;code = 99
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char = u;code = 117
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = n;code = 110
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char = u;code = 117
char = m;code = 109
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = p;code = 112
char = h;code = 104
char = y;code = 121
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char = i;code = 105
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char = s;code = 115
char = :;code = 58
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = w;code = 119
char = ;code = 32
char = c;code = 99
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = y;code = 121
char = s;code = 115
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = k;code = 107
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = ;code = 32
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char = p;code = 112
char = o;code = 111
char = x;code = 120
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char = d;code = 100
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = y;code = 121
char = c;code = 99
char = l;code = 108
char = o;code = 111
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = a;code = 97
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
result sql = Dendritic ruthenium porphyrins: a new class of highly selective catalysts for alkene epoxidation and cyclopropanation.
Dendritic ruthenium porphyrins: a new class of highly selective catalysts for alkene epoxidation and cyclopropanation.
char = A;code = 65
char = t;code = 116
char = t;code = 116
char = a;code = 97
char = c;code = 99
char = h;code = 104
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = F;code = 70
char = r;code = 114
char = &;code = 38
char = #;code = 35
char = 2;code = 50
char = 3;code = 51
char = 3;code = 51
char = ;;code = 59
char = c;code = 99
char = h;code = 104
char = e;code = 101
char = t;code = 116
char = -;code = 45
char = t;code = 116
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = (;code = 40
char = b;code = 98
char = e;code = 101
char = n;code = 110
char = z;code = 122
char = y;code = 121
char = l;code = 108
char = ;code = 32
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = );code = 41
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = [;code = 91
char = G;code = 71
char = -;code = 45
char = n;code = 110
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char = ;code = 32
char = t;code = 116
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char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = b;code = 98
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char = r;code = 114
char = u;code = 117
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = i;code = 105
char = u;code = 117
char = m;code = 109
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char = I;code = 73
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char = ;code = 32
char = m;code = 109
char = e;code = 101
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char = t;code = 116
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = y;code = 121
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char = p;code = 112
char = o;code = 111
char = r;code = 114
char = p;code = 112
char = h;code = 104
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char = r;code = 114
char = i;code = 105
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char = (;code = 40
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char = );code = 41
char = ;code = 32
char = u;code = 117
char = s;code = 115
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char = c;code = 99
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char = v;code = 118
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char = e;code = 101
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char = t;code = 116
char = ;code = 32
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = b;code = 98
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
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char = ;code = 32
char = a;code = 97
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
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char = e;code = 101
char = n;code = 110
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char = t;code = 116
char = h;code = 104
char = e;code = 101
char = n;code = 110
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char = u;code = 117
char = m;code = 109
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char = I;code = 73
char = I;code = 73
char = );code = 41
char = ;code = 32
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char = o;code = 111
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char = y;code = 121
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = 5;code = 53
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char = [;code = 91
char = G;code = 71
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char = n;code = 110
char = ];code = 93
char = (;code = 40
char = m;code = 109
char = );code = 41
char = ;code = 32
char = (;code = 40
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char = 4;code = 52
char = ,;code = 44
char = ;code = 32
char = n;code = 110
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char = 1;code = 49
char = ,;code = 44
char = ;code = 32
char = 2;code = 50
char = ;;code = 59
char = ;code = 32
char = m;code = 109
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char = 8;code = 56
char = ,;code = 44
char = ;code = 32
char = n;code = 110
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char = 0;code = 48
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char = 2;code = 50
char = );code = 41
char = .;code = 46
char = ;code = 32
char = T;code = 84
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char = a;code = 97
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char = t;code = 116
char = a;code = 97
char = c;code = 99
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char = e;code = 101
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char = a;code = 97
char = s;code = 115
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = l;code = 108
char = i;code = 105
char = z;code = 122
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = c;code = 99
char = a;code = 97
char = r;code = 114
char = b;code = 98
char = o;code = 111
char = n;code = 110
char = y;code = 121
char = l;code = 108
char = r;code = 114
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char = t;code = 116
char = h;code = 104
char = e;code = 101
char = n;code = 110
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char = u;code = 117
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char = I;code = 73
char = );code = 41
char = ;code = 32
char = c;code = 99
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char = p;code = 112
char = l;code = 108
char = e;code = 101
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 5;code = 53
char = ,;code = 44
char = 1;code = 49
char = 0;code = 48
char = ,;code = 44
char = 1;code = 49
char = 5;code = 53
char = ,;code = 44
char = 2;code = 50
char = 0;code = 48
char = -;code = 45
char = ;code = 32
char = t;code = 116
char = e;code = 101
char = t;code = 116
char = r;code = 114
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char = i;code = 105
char = s;code = 115
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char = 4;code = 52
char = ';code = 39
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char = r;code = 114
char = o;code = 111
char = x;code = 120
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char = p;code = 112
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = y;code = 121
char = l;code = 108
char = );code = 41
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char = o;code = 111
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char = p;code = 112
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char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = 5;code = 53
char = ,;code = 44
char = 1;code = 49
char = 0;code = 48
char = ,;code = 44
char = 1;code = 49
char = 5;code = 53
char = ,;code = 44
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char = 0;code = 48
char = -;code = 45
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char = e;code = 101
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = k;code = 107
char = i;code = 105
char = s;code = 115
char = (;code = 40
char = 3;code = 51
char = ';code = 39
char = ,;code = 44
char = 5;code = 53
char = ';code = 39
char = -;code = 45
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char = i;code = 105
char = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
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char = x;code = 120
char = y;code = 121
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = y;code = 121
char = l;code = 108
char = );code = 41
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = p;code = 112
char = h;code = 104
char = y;code = 121
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char = i;code = 105
char = n;code = 110
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char = h;code = 104
char = ;code = 32
char = [;code = 91
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char = O;code = 79
char = S;code = 83
char = O;code = 79
char = (;code = 40
char = 2;code = 50
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char = M;code = 77
char = e;code = 101
char = ;code = 32
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char = e;code = 101
char = f;code = 102
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char = g;code = 103
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char = d;code = 100
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char = a;code = 97
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char = e;code = 101
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char = n;code = 110
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char = C;code = 67
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char = G;code = 71
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char = d;code = 100
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char = d;code = 100
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char = N;code = 78
char = M;code = 77
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char = s;code = 115
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char = e;code = 101
char = c;code = 99
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char = c;code = 99
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char = p;code = 112
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char = s;code = 115
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char = a;code = 97
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char = h;code = 104
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char = l;code = 108
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char = i;code = 105
char = v;code = 118
char = e;code = 101
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char = n;code = 110
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char = k;code = 107
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char = w;code = 119
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char = h;code = 104
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char = O;code = 79
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char = .;code = 46
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char = T;code = 84
char = h;code = 104
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char = c;code = 99
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char = d;code = 100
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char = a;code = 97
char = t;code = 116
char = a;code = 97
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char = z;code = 122
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char = y;code = 121
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char = G;code = 71
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char = 2;code = 50
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char = (;code = 40
char = 8;code = 56
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char = s;code = 115
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char = i;code = 105
char = g;code = 103
char = h;code = 104
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char = t;code = 116
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char = ;code = 32
char = s;code = 115
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char = l;code = 108
char = e;code = 101
char = c;code = 99
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char = v;code = 118
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result sql = Attachment of Fréchet-type poly(benzyl ether) dendrons [G-n] to carbonylruthenium(II) meso-tetraphenylporphyrin (5) using covalent etheric bonds forms a series of dendritic ruthenium(II) porphyrins 5-[G-n](m) (m=4, n=1, 2; m=8, n=0-2). The attachment was realized by treating the carbonylruthenium(II) complex of 5,10,15,20- tetrakis(4'-hydroxyphenyl)porphyrin or 5,10,15,20-tetrakis(3',5'-dihydroxyphenyl)porphyrin with [G-n]OSO(2)Me in refluxing dry acetone in the presence of potassium carbonate and [18]crown-6. Complexes 5-[G-n](m) were characterized by UV/Vis, IR, and NMR spectroscopy and mass spectrometry. All of the dendritic ruthenium porphyrins are highly selective catalysts for epoxidation of alkenes with 2,6-dichloropyridine N-oxide (Cl(2)pyNO). The chemo- or diastereoselectivity increases with the generation number of the dendron and the number of dendrons attached to 5, and complex 5-[G-2](8) exhibits remarkable selectivity or turnover number in catalyzing the Cl(2)pyNO epoxidation of a variety of alkene substrates including styrene, trans-/cis-stilbene, 2,2-dimethylchromene, cyclooctene, and unsaturated steroids such as cholesteryl esters and estratetraene derivative. The cyclopropanation of styrene and its para-substituted derivatives with ethyl diazoacetate catalyzed by 5-[G-2](8) is highly trans selective.

Publication: Chemistry 2002 Apr 2 ;8(7)::1554-62.
Publication Date: 2002 Apr 2
Study Author(s): Zhang, Jun-Long;Zhou, Hai-Bing;Huang, Jie-Sheng;Che, Chi-Ming;
Institution: Department of Chemistry and Open Laboratory of Chemical Biology of the Institute of Molecular Technology for Drug Discovery and Synthesis, The University of Hong Kong Pokfulam Road, Hong Kong, China.
Shortcut link to this study:
Attachment of Fréchet-type poly(benzyl ether) dendrons [G-n] to carbonylruthenium(II) meso-tetraphenylporphyrin (5) using covalent etheric bonds forms a series of dendritic ruthenium(II) porphyrins 5-[G-n](m) (m=4, n=1, 2; m=8, n=0-2). The attachment was realized by treating the carbonylruthenium(II) complex of 5,10,15,20- tetrakis(4'-hydroxyphenyl)porphyrin or 5,10,15,20-tetrakis(3',5'-dihydroxyphenyl)porphyrin with [G-n]OSO(2)Me in refluxing dry acetone in the presence of potassium carbonate and [18]crown-6. Complexes 5-[G-n](m) were characterized by UV/Vis, IR, and NMR spectroscopy and mass spectrometry. All of the dendritic ruthenium porphyrins are highly selective catalysts for epoxidation of alkenes with 2,6-dichloropyridine N-oxide (Cl(2)pyNO). The chemo- or diastereoselectivity increases with the generation number of the dendron and the number of dendrons attached to 5, and complex 5-[G-2](8) exhibits remarkable selectivity or turnover number in catalyzing the Cl(2)pyNO epoxidation of a variety of alkene substrates including styrene, trans-/cis-stilbene, 2,2-dimethylchromene, cyclooctene, and unsaturated steroids such as cholesteryl esters and estratetraene derivative. The cyclopropanation of styrene and its para-substituted derivatives with ethyl diazoacetate catalyzed by 5-[G-2](8) is highly trans selective.
PMID: 11933084

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