Problem statement: Answer the multiple choice question.
Question: Which drug has a 12.585\% 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: S=c1cnc2ccccc2[nH]1
b: COc1cc(C)ccc1OCCOc1c(C)cccc1Cl
c: CN(C(=O)COC(=O)CNC(=O)c1ccc(Cl)cc1Cl)c1ccccc1
Answer: a. S=c1cnc2ccccc2[nH]1
{#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#}
S=c1cnc2ccccc2[nH]1
S=c1cnc2ccccc2[nH]1
1H-quinoxaline-2-thione