Task: Answer the multiple choice question.
Query: Which compound has a 2.964\% 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 or b without using any additional words.
Options:
[a] CCOC(=O)C1CCN(S(=O)(=O)c2ccc3c(c2)N(C(C)=O)CC(C)S3)CC1
[b] COc1ccc(-c2[nH]ncc2C=O)cc1OC
Answer: b. COc1ccc(-c2[nH]ncc2C=O)cc1OC
{#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#}
COc1ccc(-c2[nH]ncc2C=O)cc1OC
COc1ccc(-c2[nH]ncc2C=O)cc1OC
5-(3,4-dimethoxyphenyl)-1H-pyrazole-4-carbaldehyde