Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) COc1ccc([N+](=O)[O-])cc1NC(=O)Cc1noc2ccc(C)cc12
(b) O=C1CN(C(=O)c2ccccc2F)C(c2ccc(F)cc2)c2cc(F)ccc2N1
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}