Task: Answer the MCQ question.
Query: Which drug has a 13.389\% 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) O=C(COC(=O)c1ccc2c(c1)OCO2)Nc1ccccc1
b) O=C1Nc2ccccc2O/C1=C\c1ccccc1
Answer: b. O=C1Nc2ccccc2O/C1=C\c1ccccc1
{#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=C1Nc2ccccc2O/C1=C\c1ccccc1
O=C1Nc2ccccc2O/C1=C\c1ccccc1
(2Z)-2-benzylidene-4H-1,4-benzoxazin-3-one