Task: Answer the multiple-choice question.
Question: Which drug exhibits a 12.956\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: O=C(CC1C(=O)NCCN1Cc1c(F)cccc1Cl)NCc1ccccc1
b: COc1ccc(CC2(C)OC(c3ccncc3)=NN2C(C)=O)cc1
Answer: a. O=C(CC1C(=O)NCCN1Cc1c(F)cccc1Cl)NCc1ccccc1
{#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=C(CC1C(=O)NCCN1Cc1c(F)cccc1Cl)NCc1ccccc1
O=C(CC1C(=O)NCCN1Cc1c(F)cccc1Cl)NCc1ccccc1
N-benzyl-2-[1-[(2-chloro-6-fluorophenyl)methyl]-3-oxopiperazin-2-yl]acetamide