Task: Answer the multiple-choice question.
Question: Which compound exhibits a 0.649\% 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: Cc1nn(-c2ccccc2)c(=O)c2noc(C)c12
b: O=C(COc1ccc(Br)cc1CO)Nc1ccccc1
Answer: a. Cc1nn(-c2ccccc2)c(=O)c2noc(C)c12
{#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#}
Cc1nn(-c2ccccc2)c(=O)c2noc(C)c12
Cc1nn(-c2ccccc2)c(=O)c2noc(C)c12
[C][C][=N][N][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][=N][O][C][Branch1][C][C][=C][Ring1][P][Ring1][=Branch1]
3,4-dimethyl-6-phenyl-[1,2]oxazolo[3,4-d]pyridazin-7-one