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) O=C(Nn1cnnc1)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
b) CN1C2CCC1CC(NC(=O)c1cc(S(=O)(=O)N(C)C)c(Cl)cc1Cl)C2
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}