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 additional words.
Options:
a: C=CCn1c(-c2cccc([N+](=O)[O-])c2)n[nH]c1=S
b: CCOC(=O)c1c(C)[nH]c(C(=O)OCC(=O)N(CC(C)C)c2c(N)n(Cc3ccccc3)c(=O)[nH]c2=O)c1C
Answer: a, 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}