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(c1ccc(Cl)cc1)C1CCCN(Cc2cnn(-c3ccccc3)c2)C1
(b) CCOC(=O)COc1ccc(Br)cc1/C=C/c1[nH]c(=O)[nH]c(=O)c1[N+](=O)[O-]
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}