Task: Answer the multiple choice question.
Question: Which drug exhibits a 4.026\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) Cn1cnc([N+](=O)[O-])c1NC(C)(C)C
(b) CSc1nc(Cl)c(Cc2ccc(OCC(C)C)cc2)c(N2CCOCC2)n1
Answer: a. Cn1cnc([N+](=O)[O-])c1NC(C)(C)C
{#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#}
Cn1cnc([N+](=O)[O-])c1NC(C)(C)C
Cn1cnc([N+](=O)[O-])c1NC(C)(C)C
N-tert-butyl-3-methyl-5-nitroimidazol-4-amine