Task: Answer the multiple choice question.
Question: What is the human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM of a drug with the SMILES O=c1[nH]c2cc(Cl)c([N+](=O)[O-])nc2[nH]1?
Constraint: You must return none, one or more options from a, b, c, or d without using any additional words.
Options:
a: 8.455
b: 13.471
c: 2.102
d: 9.104
Answer: c. 2.102\%.
{#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=c1[nH]c2cc(Cl)c([N+](=O)[O-])nc2[nH]1
O=c1[nH]c2cc(Cl)c([N+](=O)[O-])nc2[nH]1
6-chloro-5-nitro-1,3-dihydroimidazo[4,5-b]pyridin-2-one