Problem statement: Answer the multiple choice question.
Query: Which drug has a 4.425\% 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=c1nc(Nc2ccccc2)sc2ccc([N+](=O)[O-])cc12
b. CC1CCN(C(=O)CSc2nnc(CNc3ccc(F)cc3)n2Cc2ccco2)CC1
Answer: a. O=c1nc(Nc2ccccc2)sc2ccc([N+](=O)[O-])cc12
{#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=c1nc(Nc2ccccc2)sc2ccc([N+](=O)[O-])cc12
O=c1nc(Nc2ccccc2)sc2ccc([N+](=O)[O-])cc12
2-anilino-6-nitro-1,3-benzothiazin-4-one