Task: Answer the MCQ question.
Query: Which compound has a 20.897\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
[a] CC(=O)N1CCN(C(=O)c2cccc(S(=O)(=O)Nc3ccc(C)cc3)c2)CC1
[b] CCOC(=O)C(NS(=O)(=O)c1ccccc1)(C(F)(F)F)P(=O)(OCC(C)C)OCC(C)C
[c] CCCC(=O)Nc1ccc(OCC(=O)OC)cc1
Answer: a. CC(=O)N1CCN(C(=O)c2cccc(S(=O)(=O)Nc3ccc(C)cc3)c2)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#}
3-(4-acetylpiperazine-1-carbonyl)-N-(4-methylphenyl)benzenesulfonamide