Task: Answer the MCQ question.
Query: Which drug exhibits a 8.686\% 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 CCCCC1(Cc2ccc([N+](=O)[O-])cc2)C(=O)N(c2ccccc2)N(c2ccccc2)C1=O
b CC(C)(C)c1ccc(NC(=O)COC(=O)C2CCCC2)cc1
c NC(=O)C1(N2CCCCC2)CCN(C(=S)Nc2cccc(Cl)c2)CC1
d CS(=O)(=O)N1CCC(C(=O)NCc2ccc(F)cc2Cl)CC1
e Cl.c1coc(CNCc2cccs2)c1
Answer: a. CCCCC1(Cc2ccc([N+](=O)[O-])cc2)C(=O)N(c2ccccc2)N(c2ccccc2)C1=O
{#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#}
CCCCC1(Cc2ccc([N+](=O)[O-])cc2)C(=O)N(c2ccccc2)N(c2ccccc2)C1=O
CCCCC1(Cc2ccc([N+](=O)[O-])cc2)C(=O)N(c2ccccc2)N(c2ccccc2)C1=O
4-butyl-4-[(4-nitrophenyl)methyl]-1,2-diphenylpyrazolidine-3,5-dione