Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: O=C(c1ccccc1)N1CCN(c2ccc(N3CCOCC3)nn2)CC1
b: CCCOc1ccc(N2C(=O)CC(N3CCN(c4ccc([N+](=O)[O-])cc4)CC3)C2=O)cc1
c: CC(/C=N/NC(=O)c1cccc(F)c1)=C\c1ccccc1
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}