Problem statement: Answer the multiple choice question.
Question: Which compound has a 12.748\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CCCC(=O)c1ccc(N2CCN(C(=O)c3ccccc3Br)CC2)c(F)c1
(b) S=C(NCCN1CCOCC1)Nc1ccc(Br)cc1
Answer: b. S=C(NCCN1CCOCC1)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#}
1-(4-bromophenyl)-3-(2-morpholin-4-ylethyl)thiourea