Problem statement: Answer the MCQ question.
Question: Which compound exhibits a 6.341\% 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 COc1ccnc(Oc2ccccc2)c1C#N
b CC(C)Sc1nc(N2CCOCC2)c2c3c(sc2n1)COC(C)(C)C3
Answer: a. COc1ccnc(Oc2ccccc2)c1C#N
{#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#}
COc1ccnc(Oc2ccccc2)c1C#N
COc1ccnc(Oc2ccccc2)c1C#N
4-methoxy-2-phenoxypyridine-3-carbonitrile