Problem statement: Answer the MCQ question.
Query: Which drug has a -3.354\% 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 other words.
Options:
(a) CCNc1c([N+](=O)[O-])ncn1C
(b) Cc1ccc(NC(=O)CN2CCc3cc4c(cc3C2C)OCCCO4)cc1
Answer: a. CCNc1c([N+](=O)[O-])ncn1C
{#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#}
CCNc1c([N+](=O)[O-])ncn1C
CCNc1c([N+](=O)[O-])ncn1C
N-ethyl-3-methyl-5-nitroimidazol-4-amine