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) CC1(c2ccccc2)NC(=O)N(CC(=O)Nc2ccccc2C(=O)NC2CCCC2)C1=O
(b) COc1ccc(CC(=O)NNC(=S)Nc2ccccc2)cc1Cl
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}