Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: CCN1CC(CN(C)Cc2cn(-c3ccc(C)cc3)nc2-c2cccc(C)c2)CC1=O
b: CC1CC(=S)Nc2ccccc2N1Cc1ccccc1
c: CC(C)(C)OC(=O)N1CC(O)CC1C(=O)OCC(=O)c1ccccc1
Answer: a
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}