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 other words.
Options:
(a) COc1ccc(Nc2nc(NCC3CCCO3)nc(N)c2[N+](=O)[O-])cc1
(b) Cc1cc(C)n2c(Br)c(CSc3nc4ccccc4o3)nc2n1
(c) O=C1CCC([N+](=O)[O-])C(c2ccc(Cl)c([N+](=O)[O-])c2)N1
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}