Task: Answer the MCQ question.
Question: Which drug has a 1.331\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] O=c1cc(-c2ccccc2)nc2n1Cc1ccccc1-2
[b] O=C(O)CCSc1ccc2ccccc2n1
[c] Cl.OC(COC(c1ccc(Cl)cc1)c1ccc(Cl)cc1)CN1CCN(c2ccccn2)CC1
Answer: a. O=c1cc(-c2ccccc2)nc2n1Cc1ccccc1-2
{#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#}
2-phenyl-6H-pyrimido[2,1-a]isoindol-4-one