Task: Answer the multiple-choice question.
Query: Which drug has a 2.041\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
[a] O=C1c2ccccc2C(=O)N1c1ccc(Cl)cn1
[b] COc1ccc(N2CCN(c3ccc(N4C(=O)COCC4=O)cc3[N+](=O)[O-])CC2)cc1
[c] Cc1oc(-c2ccccc2Cl)nc1CS(=O)CC(=O)NCc1ccc2c(c1)OCO2
Answer: a. O=C1c2ccccc2C(=O)N1c1ccc(Cl)cn1
{#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=C1c2ccccc2C(=O)N1c1ccc(Cl)cn1
O=C1c2ccccc2C(=O)N1c1ccc(Cl)cn1
2-(5-chloropyridin-2-yl)isoindole-1,3-dione