Problem statement: Answer the multiple choice question.
Question: Which drug has a 5.742\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CCNCCNc1ccc(Cl)cc1[N+](=O)[O-].Cl
(b) O=C1CN(C(=O)COC(=O)c2ccc[n+]([O-])c2)c2ccccc2N1
Answer: a. CCNCCNc1ccc(Cl)cc1[N+](=O)[O-].Cl
{#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#}
CCNCCNc1ccc(Cl)cc1[N+](=O)[O-].Cl
CCNCCNc1ccc(Cl)cc1[N+](=O)[O-].Cl
N'-(4-chloro-2-nitrophenyl)-N-ethylethane-1,2-diamine;hydrochloride