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=C1CC(/C=C/c2ccccc2)(C(=O)NC2CCCC2)N1c1ccc(S(=O)(=O)N2CCCC2)cc1
b. NC(=O)CC(NC(=O)Cc1ccc(Cl)cc1)c1ccc(N2CCC(Cc3ccccc3)CC2)c([N+](=O)[O-])c1
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}