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 additional words.
Options:
a. O=C(NC(=S)Nc1ccccc1[N+](=O)[O-])c1ccccc1
b. CC1CCCN(CCCN2C(=O)C3C(C(=O)Nc4ccc(Cl)cc4)C4C=CC3(O4)C2C(=O)NC2CCCCC2)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}