Problem statement: Answer the multiple choice question.
Query: Which drug exhibits a 4.573\% 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) O=C(COC(=O)c1cc[n+]([O-])cc1)Nc1ccccc1Cl
b) CC(=O)c1cn(CCCCCCCn2cc(C(C)=O)c(=O)[nH]c2=O)c(=O)[nH]c1=O
Answer: a. O=C(COC(=O)c1cc[n+]([O-])cc1)Nc1ccccc1Cl
{#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=C(COC(=O)c1cc[n+]([O-])cc1)Nc1ccccc1Cl
O=C(COC(=O)c1cc[n+]([O-])cc1)Nc1ccccc1Cl
[2-(2-chloroanilino)-2-oxoethyl]1-oxidopyridin-1-ium-4-carboxylate