Task: Answer the multiple-choice question.
Query: Which compound has a 18.403\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
(a) COCCCNC(=O)c1ccc2c(c1)CCN2S(C)(=O)=O
(b) O=C(Nc1ccc(S(=O)(=O)NC2=NCCCCC2)cc1)c1ccco1
(c) Cn1c(SCC(=O)N2CCCC2=O)nc2ccccc21
(d) Cc1ccc(F)cc1NC(=O)C1CCCN(c2ncccn2)C1
(e) COc1ccc2nccc(C(N)=O)c2c1
Answer: c. Cn1c(SCC(=O)N2CCCC2=O)nc2ccccc21
{#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#}
1-[2-(1-methylbenzimidazol-2-yl)sulfanylacetyl]pyrrolidin-2-one