Task: Answer the MCQ question.
Query: Which drug exhibits a 15.807\% 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) NC(=O)c1ccccc1NC(=O)CN1CCN(Cc2ccccc2)CC1
(b) CN1CC(=O)NC1=NC(=O)c1cc(F)c(F)cc1Cl
Answer: b. CN1CC(=O)NC1=NC(=O)c1cc(F)c(F)cc1Cl
{#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#}
CN1CC(=O)NC1=NC(=O)c1cc(F)c(F)cc1Cl
CN1CC(=O)NC1=NC(=O)c1cc(F)c(F)cc1Cl
2-chloro-4,5-difluoro-N-(1-methyl-4-oxoimidazolidin-2-ylidene)benzamide