Task: Answer the multiple choice question.
Query: Which compound has a 3.405\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: COc1cccc2[nH]c3c(=O)n(CCN(C)C)cnc3c12
b: CCC(=O)N1CCc2cc(S(=O)(=O)CCC(=O)Nc3ccc(CC)cc3)ccc21
Answer: a. COc1cccc2[nH]c3c(=O)n(CCN(C)C)cnc3c12
{#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#}
COc1cccc2[nH]c3c(=O)n(CCN(C)C)cnc3c12
COc1cccc2[nH]c3c(=O)n(CCN(C)C)cnc3c12
3-[2-(dimethylamino)ethyl]-9-methoxy-5H-pyrimido[5,4-b]indol-4-one