Task: Answer the multiple choice question.
Query: Which compound exhibits a -21.285\% 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. O=C(c1cccs1)N1CCN(c2ccc([N+](=O)[O-])cc2F)CC1
b. COc1cc(/C(O)=C(\C#N)c2nc3ccccc3[nH]2)cc(OC)c1OC
c. Cc1cc(S(=O)(=O)N2CCCC(C)C2)ccc1-n1cnnn1
Answer: a. O=C(c1cccs1)N1CCN(c2ccc([N+](=O)[O-])cc2F)CC1
{#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#}
O=C(c1cccs1)N1CCN(c2ccc([N+](=O)[O-])cc2F)CC1
O=C(c1cccs1)N1CCN(c2ccc([N+](=O)[O-])cc2F)CC1
[4-(2-fluoro-4-nitrophenyl)piperazin-1-yl]-thiophen-2-ylmethanone