Task: Answer the MCQ question.
Query: Which drug exhibits a 5.504\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: Cc1cc[n+](Cc2ccc([N+](=O)[O-])cc2)cc1.[Br-]
b: Cc1cc2cc(CN(Cc3ccco3)C(=O)C3CCCCC3)c(=O)[nH]c2cc1C
c: CCCS(=O)(=O)N1CCC(C(=O)NCCN2CCC(Cc3ccccc3)CC2)CC1
d: Cc1ccc(C)c(-n2cc(-c3ccc(Cl)cc3)nc2SCC(=O)NC2CCS(=O)(=O)C2)c1
Answer: a. Cc1cc[n+](Cc2ccc([N+](=O)[O-])cc2)cc1.[Br-]
{#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#}
Cc1cc[n+](Cc2ccc([N+](=O)[O-])cc2)cc1.[Br-]
Cc1cc[n+](Cc2ccc([N+](=O)[O-])cc2)cc1.[Br-]
4-methyl-1-[(4-nitrophenyl)methyl]pyridin-1-ium;bromide