Task: Answer the multiple-choice question.
Query: Which compound has a 13.221\% 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 O=C(O)CC(NC(=O)c1cccc([N+](=O)[O-])c1)c1ccc2c(c1)OCO2
b O=C1CN(C(=O)c2ccc(Cl)c([N+](=O)[O-])c2)c2ccccc2N1
Answer: b. O=C1CN(C(=O)c2ccc(Cl)c([N+](=O)[O-])c2)c2ccccc2N1
{#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=C1CN(C(=O)c2ccc(Cl)c([N+](=O)[O-])c2)c2ccccc2N1
O=C1CN(C(=O)c2ccc(Cl)c([N+](=O)[O-])c2)c2ccccc2N1
4-(4-chloro-3-nitrobenzoyl)-1,3-dihydroquinoxalin-2-one