Problem statement: Answer the multiple-choice question.
Question: Which compound has a 17.574\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: [Cl-].c1ccc(-[n+]2nc(Nc3cccc4ccccc34)sc2-c2c3ccccc3cc3ccccc23)cc1
b: O=C(O)CCC(=O)c1ccc2ccc3cccc4ccc1c2c34
c: O=C(OCc1ccc([N+](=O)[O-])cc1)c1ccc(N2CCCC2)c([N+](=O)[O-])c1
Answer: a. [Cl-].c1ccc(-[n+]2nc(Nc3cccc4ccccc34)sc2-c2c3ccccc3cc3ccccc23)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#}
[Cl-].c1ccc(-[n+]2nc(Nc3cccc4ccccc34)sc2-c2c3ccccc3cc3ccccc23)cc1
[Cl-].c1ccc(-[n+]2nc(Nc3cccc4ccccc34)sc2-c2c3ccccc3cc3ccccc23)cc1
5-anthracen-9-yl-N-naphthalen-1-yl-4-phenyl-1,3,4-thiadiazol-4-ium-2-amine;chloride