Task: Answer the MCQ question.
Query: Which drug exhibits a 5.432\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] O=c1c2ccccc2nc(-c2ccccc2)n1O
[b] CCCCn1c(N)c(N(CCOC)C(=O)c2cc(=O)[nH]c3ccccc23)c(=O)[nH]c1=O
[c] Clc1cc(Cl)c2nc(N3CCCCC3)sc2c1
Answer: a. O=c1c2ccccc2nc(-c2ccccc2)n1O
{#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#}
O=c1c2ccccc2nc(-c2ccccc2)n1O
O=c1c2ccccc2nc(-c2ccccc2)n1O
3-hydroxy-2-phenylquinazolin-4-one