Problem statement: Answer the MCQ question.
Query: Which compound exhibits a 19.943\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] CC(=O)Nc1nnc(S(N)(=O)=O)s1
[b] O=c1c2cc(Br)ccc2nc(-c2ccc([N+](=O)[O-])cc2)n1O
Answer: b. O=c1c2cc(Br)ccc2nc(-c2ccc([N+](=O)[O-])cc2)n1O
{#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=c1c2cc(Br)ccc2nc(-c2ccc([N+](=O)[O-])cc2)n1O
O=c1c2cc(Br)ccc2nc(-c2ccc([N+](=O)[O-])cc2)n1O
[O][=C][C][=C][C][Branch1][C][Br][=C][C][=C][Ring1][#Branch1][N][=C][Branch1][S][C][=C][C][=C][Branch1][=Branch1][N+1][=Branch1][C][=O][O-1][C][=C][Ring1][=Branch2][N][Ring2][Ring1][Ring2][O]
6-bromo-3-hydroxy-2-(4-nitrophenyl)quinazolin-4-one