Task: Answer the multiple-choice question.
Question: Which drug has a 15.503\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a CC1(C)CC(=O)C(C(C2=C(O)CC(C)(C)CC2=O)c2ccc(Cl)c([N+](=O)[O-])c2)C(=O)C1
b COCCN(C(=O)c1ccco1)C(C(=O)NC1CCCC1)c1cccs1
c CCOC(=S)SCc1cn2ccccc2n1
d O=C(COc1ccc(Cl)cc1)Nc1nc(-c2cccs2)cs1
Answer: c. CCOC(=S)SCc1cn2ccccc2n1
{#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-ethyl imidazo[1,2-a]pyridin-2-ylmethylsulfanylmethanethioate