Task: Answer the multiple choice question.
Query: Which compound has a 12.555\% 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 Cn1nnc2ccccc2c1=O
b COc1cc(CN2CCN(Cc3ccc(C(F)(F)F)cc3)CC2)cc(OC)c1OC.O=C(O)C(=O)O
Answer: a. Cn1nnc2ccccc2c1=O
{#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#}
Cn1nnc2ccccc2c1=O
Cn1nnc2ccccc2c1=O
3-methyl-1,2,3-benzotriazin-4-one