Task: Answer the multiple choice question.
Query: Which compound exhibits a 25.890\% 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 CCOC(=O)Cn1nc(C(F)F)c(Br)c1C
b CCN(CC)c1ncnc2c1ncn2Cc1c(Cl)cccc1Cl
Answer: a. CCOC(=O)Cn1nc(C(F)F)c(Br)c1C
{#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#}
CCOC(=O)Cn1nc(C(F)F)c(Br)c1C
CCOC(=O)Cn1nc(C(F)F)c(Br)c1C
ethyl 2-[4-bromo-3-(difluoromethyl)-5-methylpyrazol-1-yl]acetate