Task: Answer the MCQ question.
Question: Which drug exhibits a 13.124\% 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, b, c, or d without using any other words.
Options:
a COc1ccccc1CNC(=O)CCC(=O)Nc1nnc(C(C)C)s1
b Cc1ccc(-c2ccc(=O)n(CCC(=O)N3CCN(c4cccc(C)c4)C(C)C3)n2)cc1
c CCOn1c(=O)c(-c2ccc(Br)cc2)[n+]([O-])c2ccccc21
d O=C(Nc1ccccc1F)c1ccc2c(c1)OCO2
Answer: c. CCOn1c(=O)c(-c2ccc(Br)cc2)[n+]([O-])c2ccccc21
{#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#}
CCOn1c(=O)c(-c2ccc(Br)cc2)[n+]([O-])c2ccccc21
CCOn1c(=O)c(-c2ccc(Br)cc2)[n+]([O-])c2ccccc21
3-(4-bromophenyl)-1-ethoxy-4-oxidoquinoxalin-4-ium-2-one