Task: Answer the multiple choice question.
Query: Which drug exhibits a 20.188\% 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.) CC(=O)Nc1ccc(C(=O)NCCCSc2ccccc2)cc1
b.) O=C(CC1C(=O)NCCN1C(=O)Nc1ccc(F)cc1F)Nc1ccc(F)cc1
Answer: b. O=C(CC1C(=O)NCCN1C(=O)Nc1ccc(F)cc1F)Nc1ccc(F)cc1
{#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)NCCN1C(=O)Nc1ccc(F)cc1F)Nc1ccc(F)cc1
O=C(CC1C(=O)NCCN1C(=O)Nc1ccc(F)cc1F)Nc1ccc(F)cc1
N-(2,4-difluorophenyl)-2-[2-(4-fluoroanilino)-2-oxoethyl]-3-oxopiperazine-1-carboxamide