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. CCN(c1cc(C)cc(C)c1)S(=O)(=O)c1nnc(NC(=O)C(C)C)s1
b. CC(=O)N1CCN(CC(=O)Nc2ccc([N+](=O)[O-])cc2Br)CC1
c. Cc1ccc(-c2ccc(/C=N/NC(=O)Cc3nnc(N)s3)o2)cc1Cl
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}