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. CN(C(=O)c1cccs1)c1ccc(OCC(=O)N2CCC(C(N)=O)CC2)cc1
b. O=C(NN1C(=O)NC2(CCCCC2)C1=O)c1ccc(-c2ccc([N+](=O)[O-])cc2)o1
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}