Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a 4.189\% 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 Fc1cc(Br)ccc1NC(=S)NCCc1ccccc1
b COc1ccc2oc(=O)c(C(=O)NCc3ccccc3)cc2c1
Answer: a. Fc1cc(Br)ccc1NC(=S)NCCc1ccccc1
{#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#}
Fc1cc(Br)ccc1NC(=S)NCCc1ccccc1
Fc1cc(Br)ccc1NC(=S)NCCc1ccccc1
1-(4-bromo-2-fluorophenyl)-3-(2-phenylethyl)thiourea