Task: Answer the MCQ question.
Question: Which drug has a 1.191\% 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 COc1ccc(C)cc1NC(=O)c1ccc(NC(=O)CC2SC(N3CCCC3)=NC2=O)cc1
b Nc1c(N2CCN(c3ccccc3)CC2)c2ccccc2oc1=O
Answer: b. Nc1c(N2CCN(c3ccccc3)CC2)c2ccccc2oc1=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#}
3-amino-4-(4-phenylpiperazin-1-yl)chromen-2-one