Task: Answer the multiple-choice question.
Query: Which compound exhibits a 37.621\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a O=c1c2ccccc2nc2ccccn12
b O=C(N/N=C/c1cccc(Oc2ccccc2)c1)c1cc[n+]([O-])cc1
Answer: a. O=c1c2ccccc2nc2ccccn12
{#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=c1c2ccccc2nc2ccccn12
O=c1c2ccccc2nc2ccccn12
pyrido[2,1-b]quinazolin-11-one