Task: Answer the multiple-choice question.
Question: Which compound exhibits a 6.535\% 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. Cc1ccc(-c2cc(C(=O)N3CCN(C(=O)c4ccco4)CC3)[nH]n2)cc1C
b. COc1ccnc(-n2cccc2C=O)c1C#N
Answer: b. COc1ccnc(-n2cccc2C=O)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(-n2cccc2C=O)c1C#N
COc1ccnc(-n2cccc2C=O)c1C#N
2-(2-formylpyrrol-1-yl)-4-methoxypyridine-3-carbonitrile