Task: Answer the MCQ question.
Question: Which compound exhibits a 3.960\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a Cc1ccccc1NCC(=O)c1ccc(Br)cc1
b O=C(NC1CCCN(CCc2ccccc2)C1)c1c(F)cccc1F
Answer: a. Cc1ccccc1NCC(=O)c1ccc(Br)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#}
Cc1ccccc1NCC(=O)c1ccc(Br)cc1
Cc1ccccc1NCC(=O)c1ccc(Br)cc1
1-(4-bromophenyl)-2-(2-methylanilino)ethanone