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] Cc1ccc2c(c1)N(CC(=O)N1CCN(c3nc4ccccc4s3)CC1)C(=O)C(C)O2
[b] CC(C)(C)OC(=O)CNC(=O)c1nc[nH]c1C(=O)N1CCc2ccccc2C1
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}