Problem statement: Answer the MCQ question.
Query: Which compound has a 8.414\% 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 other words.
Options:
(a) O=c1c2ccccc2nc2n1CCO2
(b) Cc1cc(C)n(-c2nc3ccccc3nc2Nc2ccc3[nH]c(=O)[nH]c3c2)n1
Answer: a. O=c1c2ccccc2nc2n1CCO2
{#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=c1c2ccccc2nc2n1CCO2
O=c1c2ccccc2nc2n1CCO2
2,3-dihydro-[1,3]oxazolo[2,3-b]quinazolin-5-one