Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] COc1ccc(C2N(C(=O)c3ccccc3)CCN2C(=O)c2ccccc2)cc1
[b] Cn1c(-c2ccc(F)cc2)cnc1NCc1cccc([N+](=O)[O-])c1
[c] Cc1ccc(-c2cc(Cc3ccccc3)c(=O)[nH]n2)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}