Task: Answer the multiple-choice question.
Query: Which compound exhibits a 7.739\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: CCn1cnc2cc([N+](=O)[O-])ccc21
b: COc1ccc(C(=O)Nc2ccnn2C2CCN(Cc3ccn[nH]3)CC2)cc1
c: O=C(Nc1nccs1)C1CCCN1S(=O)(=O)c1ccc(F)cc1
Answer: a. CCn1cnc2cc([N+](=O)[O-])ccc21
{#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#}
CCn1cnc2cc([N+](=O)[O-])ccc21
CCn1cnc2cc([N+](=O)[O-])ccc21
1-ethyl-5-nitrobenzimidazole