Problem statement: Answer the multiple-choice question.
Question: Which compound exhibits a 4.091\% 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: COc1cc2oc3ccccc3c(=O)c2cc1OC
b: O=C(Nc1ccc2c(c1)OCO2)C1CC(=O)N(c2ccc3c(c2)OCCO3)C1
Answer: a. COc1cc2oc3ccccc3c(=O)c2cc1OC
{#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#}
COc1cc2oc3ccccc3c(=O)c2cc1OC
COc1cc2oc3ccccc3c(=O)c2cc1OC
2,3-dimethoxyxanthen-9-one