Task: Answer the MCQ question.
Question: What is the hERG inhibition at 10uM of a drug with the SMILES O=C(NCc1cc([N+](=O)[O-])ccc1O)c1ccc(Oc2ccccc2)cc1?
Constraint: You must return none, one or more options from a, b, c, or d without using any additional words.
Options:
a. 6.737
b. 21.050
c. -17.041
d. 19.432
Answer: b. 21.050%.
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: What is the {herg_central_at_10uM__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_10uM%SMILES%}
Answer: {%multiple_choice_result}. {herg_central_at_10uM#}{herg_central_at_10uM__units}.
O=C(NCc1cc([N+](=O)[O-])ccc1O)c1ccc(Oc2ccccc2)cc1
O=C(NCc1cc([N+](=O)[O-])ccc1O)c1ccc(Oc2ccccc2)cc1
N-[(2-hydroxy-5-nitrophenyl)methyl]-4-phenoxybenzamide