Task: Answer the multiple choice question.
Query: Which compound exhibits a 6.396\% 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) Cc1nc2nc(-c3ccccc3)nn2c(C)c1Cl
(b) CNS(=O)(=O)c1cc(-c2nnc(N3CCOCC3)c3ccccc23)ccc1C
Answer: a. Cc1nc2nc(-c3ccccc3)nn2c(C)c1Cl
{#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#}
Cc1nc2nc(-c3ccccc3)nn2c(C)c1Cl
Cc1nc2nc(-c3ccccc3)nn2c(C)c1Cl
6-chloro-5,7-dimethyl-2-phenyl-[1,2,4]triazolo[1,5-a]pyrimidine