Task: Answer the multiple choice question.
Query: Which compound exhibits a 2.227\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: CC1CC(C)CN(c2ccc([N+](=O)[O-])cc2-c2nn[nH]n2)C1
b: CCOC(=O)c1cnn(-c2ccccc2)c1-n1cccc1C(=O)C(=O)Nc1ccccc1
Answer: a. CC1CC(C)CN(c2ccc([N+](=O)[O-])cc2-c2nn[nH]n2)C1
{#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#}
CC1CC(C)CN(c2ccc([N+](=O)[O-])cc2-c2nn[nH]n2)C1
CC1CC(C)CN(c2ccc([N+](=O)[O-])cc2-c2nn[nH]n2)C1
3,5-dimethyl-1-[4-nitro-2-(2H-tetrazol-5-yl)phenyl]piperidine