Problem statement: Answer the multiple choice question.
Question: Which drug exhibits a 19.908\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) Cc1c(N)cccc1[N+](=O)[O-]
(b) COc1cc(C(=O)Nc2cccc(-c3nc4cc(C)ccc4o3)c2)cc(OC)c1OC
Answer: a. Cc1c(N)cccc1[N+](=O)[O-]
{#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#}
Cc1c(N)cccc1[N+](=O)[O-]
Cc1c(N)cccc1[N+](=O)[O-]
[C][C][=C][Branch1][C][N][C][=C][C][=C][Ring1][#Branch1][N+1][=Branch1][C][=O][O-1]
2-methyl-3-nitroaniline