Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] CCOC(=O)Cn1c(=N)n(CCOc2ccc3ccccc3c2)c2ccccc21.Cl
[b] O=[N+]([O-])c1cccc(CSc2nnc(Cc3ccccc3)n2-c2ccc(F)cc2)c1
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__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_inhib%}
Answer: {%multiple_choice_result}