Problem statement: Answer the MCQ question.
Question: Which drug has a 20.267\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: NNc1nc2c(Cl)c(Cl)ccc2s1
b: O=[N+]([O-])c1ccc(-c2csc3[n+]2CCS3)cc1.[Br-]
c: Cc1nn(CC(=O)Nc2cccnc2)c(=O)c2ccccc12
Answer: a. NNc1nc2c(Cl)c(Cl)ccc2s1
{#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#}
NNc1nc2c(Cl)c(Cl)ccc2s1
NNc1nc2c(Cl)c(Cl)ccc2s1
(4,5-dichloro-1,3-benzothiazol-2-yl)hydrazine