Task: Answer the MCQ question.
Query: What is the hERG inhibition at 1uM of a drug with the SMILES O=C1NC(c2ccc(Cl)c([N+](=O)[O-])c2)Nc2ccccc21?
Constraint: You must return none, one or more options from a or b without using any additional words.
Options:
(a) 16.886
(b) 19.342
Answer: a. 16.886\%.
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: What is the {herg_central_at_1uM__names__noun} of a {#compound|drug!} with the {SMILES__description} {SMILES#}?
Constraint: You must return none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{herg_central_at_1uM%SMILES%}
Answer: {%multiple_choice_result}. {herg_central_at_1uM#}{herg_central_at_1uM__units}.
O=C1NC(c2ccc(Cl)c([N+](=O)[O-])c2)Nc2ccccc21
O=C1NC(c2ccc(Cl)c([N+](=O)[O-])c2)Nc2ccccc21
2-(4-chloro-3-nitrophenyl)-2,3-dihydro-1H-quinazolin-4-one