Task: Answer the MCQ question.
Query: Which compound has a 21.792\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a.) CC(=O)N1c2ccc(S(=O)(=O)NCCC(=O)Nc3cccc(Cl)c3)cc2CC1C
b.) CC1Sc2ccc(C(=O)N3CCCC(C(F)(F)F)C3)cc2NC1=O
c.) O=C(CSc1cccc[n+]1[O-])Nc1ccc([N+](=O)[O-])cc1Cl
Answer: c. O=C(CSc1cccc[n+]1[O-])Nc1ccc([N+](=O)[O-])cc1Cl
{#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(CSc1cccc[n+]1[O-])Nc1ccc([N+](=O)[O-])cc1Cl
O=C(CSc1cccc[n+]1[O-])Nc1ccc([N+](=O)[O-])cc1Cl
N-(2-chloro-4-nitrophenyl)-2-(1-oxidopyridin-1-ium-2-yl)sulfanylacetamide