Task: Answer the MCQ question.
Question: Which drug exhibits a 2.500\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a) CC(=O)Nc1ccccc1OC(=O)N(C)C
b) CCc1ccc(C(=O)COC(=O)C(Cc2ccccc2)NC(=O)C2CCC(C)CC2)cc1
Answer: a. CC(=O)Nc1ccccc1OC(=O)N(C)C
{#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#}
CC(=O)Nc1ccccc1OC(=O)N(C)C
CC(=O)Nc1ccccc1OC(=O)N(C)C
(2-acetamidophenyl) N,N-dimethylcarbamate