Problem statement: Answer the MCQ question.
Query: Which compound has a 21.007\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a O=C(c1ccc(-c2ccc([N+](=O)[O-])cc2)o1)N1CCCCC1
b c1coc(CNc2ncnc3nc[nH]c23)c1
Answer: b. c1coc(CNc2ncnc3nc[nH]c23)c1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
c1coc(CNc2ncnc3nc[nH]c23)c1
c1coc(CNc2ncnc3nc[nH]c23)c1
[C][=C][O][C][Branch1][S][C][N][C][=N][C][=N][C][N][=C][NH1][C][Ring1][=Branch2][=Ring1][Branch1][=C][Ring1][S]
N-(furan-2-ylmethyl)-7H-purin-6-amine