Task: Answer the multiple choice question.
Question: Which drug has a 10.744\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] O=C(Nc1ccccc1)C1CC(=O)n2c(nc3ccccc32)N1
[b] Nc1cccc2c1C(=O)N(C(=O)c1ccccc1Cl)C2=O
Answer: a. O=C(Nc1ccccc1)C1CC(=O)n2c(nc3ccccc32)N1
{#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#}
4-oxo-N-phenyl-2,3-dihydro-1H-pyrimido[1,2-a]benzimidazole-2-carboxamide