Task: Answer the MCQ question.
Question: Which compound has a 21.104\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a O=C(O)c1cnn2c(C(F)(F)F)cc(-c3ccco3)nc12
b CCOC(=O)c1ccc(N2C(=O)CC(N3CCN(C(=O)c4ccccc4)CC3)C2=O)cc1
Answer: a. O=C(O)c1cnn2c(C(F)(F)F)cc(-c3ccco3)nc12
{#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#}
O=C(O)c1cnn2c(C(F)(F)F)cc(-c3ccco3)nc12
O=C(O)c1cnn2c(C(F)(F)F)cc(-c3ccco3)nc12
5-(furan-2-yl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid