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. CCc1ccc(NC(=O)[C@H](C)NC(=O)C2CCN(C(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)C)CC2)cc1
b. CNC(=S)NNC(=O)c1sccc1OCc1ccc(Cl)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}