Task: Answer the multiple choice question.
Query: Which drug exhibits a 18.895% 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=c1c2ccccc2ncn1-c1ccc([N+](=O)[O-])cc1[N+](=O)[O-]
[b] COc1ccc(CCN2C(=O)NC(NC(=O)CC(C)C)(C(F)(F)F)C2=O)cc1OC
Answer: b. COc1ccc(CCN2C(=O)NC(NC(=O)CC(C)C)(C(F)(F)F)C2=O)cc1OC
{#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#}
COc1ccc(CCN2C(=O)NC(NC(=O)CC(C)C)(C(F)(F)F)C2=O)cc1OC
COc1ccc(CCN2C(=O)NC(NC(=O)CC(C)C)(C(F)(F)F)C2=O)cc1OC
N-[1-[2-(3,4-dimethoxyphenyl)ethyl]-2,5-dioxo-4-(trifluoromethyl)imidazolidin-4-yl]-3-methylbutanamide