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: CC(=O)Nc1ccc(CC(=O)O)cc1
b: O=C(Nc1ccc2c(c1)CCC2)C1CCN(c2c3c(nc4ncnn24)CCC3)CC1
c: COC(=O)c1c(C)cc(O)c(C)c1O
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}