Task: Answer the multiple choice question.
Question: Which drug exhibits a 15.684\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] COc1ccc(N2CC(C(=O)OCC(=O)NCc3ccccc3)CC2=O)cc1
[b] COn1c(=O)c(-c2cccc(Br)c2)[n+]([O-])c2ccccc21
Answer: b. COn1c(=O)c(-c2cccc(Br)c2)[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#}
COn1c(=O)c(-c2cccc(Br)c2)[n+]([O-])c2ccccc21
COn1c(=O)c(-c2cccc(Br)c2)[n+]([O-])c2ccccc21
3-(3-bromophenyl)-1-methoxy-4-oxidoquinoxalin-4-ium-2-one