Task: Answer the MCQ question.
Question: Which drug exhibits a 5.781\% human ether-à-go-go related gene (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(NC(=S)Nc1nc(-c2cccc([N+](=O)[O-])c2)cs1)c1ccccc1Cl
[b] CCN1C(=O)c2ccc(-c3nc4ccccc4c(=O)o3)cc2C1=O
Answer: b. CCN1C(=O)c2ccc(-c3nc4ccccc4c(=O)o3)cc2C1=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#}
CCN1C(=O)c2ccc(-c3nc4ccccc4c(=O)o3)cc2C1=O
CCN1C(=O)c2ccc(-c3nc4ccccc4c(=O)o3)cc2C1=O
2-ethyl-5-(4-oxo-3,1-benzoxazin-2-yl)isoindole-1,3-dione