Task: Answer the MCQ question.
Query: Which compound has a 4.250\% 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: CCOc1ccccc1NC(=O)CCS(=O)(=O)c1cccc2nsnc12
b: CCOC(=O)c1csc(-c2ccc([N+](=O)[O-])cc2)n1
c: CC(=O)c1cccc(NC(=S)N2CCc3ccccc32)c1
Answer: b. CCOC(=O)c1csc(-c2ccc([N+](=O)[O-])cc2)n1
{#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#}
CCOC(=O)c1csc(-c2ccc([N+](=O)[O-])cc2)n1
CCOC(=O)c1csc(-c2ccc([N+](=O)[O-])cc2)n1
ethyl 2-(4-nitrophenyl)-1,3-thiazole-4-carboxylate