Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a 0.507\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. O=[N+]([O-])c1ccc(Cl)c([N+](=O)[O-])c1
b. CCN(CC)C(=O)C1CCN(S(=O)(=O)c2ccc3oc4ccccc4c3c2)CC1
Answer: a. O=[N+]([O-])c1ccc(Cl)c([N+](=O)[O-])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#}
O=[N+]([O-])c1ccc(Cl)c([N+](=O)[O-])c1
O=[N+]([O-])c1ccc(Cl)c([N+](=O)[O-])c1
[O][=N+1][Branch1][C][O-1][C][=C][C][=C][Branch1][C][Cl][C][Branch1][=Branch1][N+1][=Branch1][C][=O][O-1][=C][Ring1][#Branch2]
2-chloro-3-nitro-5-nitrocyclohexa-1,3,5-triene