Task: Answer the multiple-choice question.
Question: Which drug has a -18.595% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: O=C(CCn1nnc(-c2cccs2)n1)NCc1ccccc1Cl
b: CC(C)C(=O)NC(Nc1cccc([N+](=O)[O-])c1)C(Cl)(Cl)Cl
Answer: b. CC(C)C(=O)NC(Nc1cccc([N+](=O)[O-])c1)C(Cl)(Cl)Cl
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CC(C)C(=O)NC(Nc1cccc([N+](=O)[O-])c1)C(Cl)(Cl)Cl
CC(C)C(=O)NC(Nc1cccc([N+](=O)[O-])c1)C(Cl)(Cl)Cl
2-methyl-N-[2,2,2-trichloro-1-(3-nitroanilino)ethyl]propanamide