Task: Answer the multiple-choice question.
Question: Which compound has a 4.224\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) Cc1cc(C)c(NC(=O)COc2nc3ccccc3nc2C)c(C)c1
(b) CCOC(=O)COn1c(=O)c[n+]([O-])c2ccccc21
Answer: b. CCOC(=O)COn1c(=O)c[n+]([O-])c2ccccc21
{#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#}
CCOC(=O)COn1c(=O)c[n+]([O-])c2ccccc21
CCOC(=O)COn1c(=O)c[n+]([O-])c2ccccc21
ethyl 2-(4-oxido-2-oxoquinoxalin-4-ium-1-yl)oxyacetate