Task: Answer the multiple-choice question.
Question: Which drug has a 19.226% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) COc1ccc([N+](=O)[O-])cc1-n1cnnn1
b) CCN(CC)S(=O)(=O)c1cccc(NC(=S)NC(=O)/C=C/c2ccc(S(=O)(=O)N3CCOCC3)cc2)c1
Answer: a. COc1ccc([N+](=O)[O-])cc1-n1cnnn1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
COc1ccc([N+](=O)[O-])cc1-n1cnnn1
COc1ccc([N+](=O)[O-])cc1-n1cnnn1
1-(2-methoxy-5-nitrophenyl)tetrazole