Task: Answer the MCQ question.
Query: Which compound has a 5.857% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] CCCCn1nc(-c2ccccc2)c2nc3ccccc3nc21
[b] O=C(CCNc1ccc(Cc2ccncc2)cc1)c1ccc([N+](=O)[O-])cc1
[c] O=C1NC(=S)N(c2ccccc2F)C(=O)/C1=C\c1cccs1
[d] CCOc1ccc(-c2cc3cc(OC)c(OC)cc3c(C)n2)cc1
Answer: a. CCCCn1nc(-c2ccccc2)c2nc3ccccc3nc21
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CCCCn1nc(-c2ccccc2)c2nc3ccccc3nc21
CCCCn1nc(-c2ccccc2)c2nc3ccccc3nc21
1-butyl-3-phenylpyrazolo[4,3-b]quinoxaline