Problem statement: Answer the MCQ question.
Query: Which drug exhibits a -1.541\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: O=C(N1CCN(c2ccccn2)CC1)C(Cl)(Cl)Cl
b: COc1ccc(S(=O)(=O)CCC(=O)N2CCN(c3ccc(C(C)=O)cc3)CC2)cc1
Answer: a. O=C(N1CCN(c2ccccn2)CC1)C(Cl)(Cl)Cl
{#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(N1CCN(c2ccccn2)CC1)C(Cl)(Cl)Cl
O=C(N1CCN(c2ccccn2)CC1)C(Cl)(Cl)Cl
2,2,2-trichloro-1-(4-pyridin-2-ylpiperazin-1-yl)ethanone