Task: Answer the multiple-choice question.
Question: Which compound exhibits a 2.399\% 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(C)(C)NC(=O)Nc1ccc(Br)cc1
(b) O=C(CN1CCN(S(=O)(=O)c2ccc(F)cc2)CC1)Nc1ccc(F)cc1F
Answer: a. CC(C)(C)NC(=O)Nc1ccc(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#}
CC(C)(C)NC(=O)Nc1ccc(Br)cc1
CC(C)(C)NC(=O)Nc1ccc(Br)cc1
1-(4-bromophenyl)-3-tert-butylurea