Task: Answer the multiple-choice question.
Query: Which compound exhibits a -8.552\% 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, b, or c without using any other words.
Options:
a: CCCCCCNC(=O)c1cn(CC)c2cc(N3CCN(C)CC3)c(F)cc2c1=O
b: O=C(COc1ccc(-c2ccccc2)cc1)N1CCN(C(=O)c2cccs2)CC1
c: CCOc1ccccc1C(=O)NCCCCCC(=O)O
Answer: b. O=C(COc1ccc(-c2ccccc2)cc1)N1CCN(C(=O)c2cccs2)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#}
2-(4-phenylphenoxy)-1-[4-(thiophene-2-carbonyl)piperazin-1-yl]ethanone