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: CCCN1CCC(=O)N([C@H](COc2ccccc2)CC(C)C)CC1
b: CCC(C)(C)NC(=O)C(c1ccc(O)cc1)N(C(=O)Cn1nnc2ccccc21)c1ccc(NC(C)=O)cc1
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}