Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a) O=C(c1cc2cc(Br)ccc2[nH]1)N1CCc2ccccc21
b) Cc1ccc(-c2nnc(NC(=O)c3ccc([N+](=O)[O-])o3)o2)c(C)c1
c) O=C(CSc1nc(-c2ccco2)cc(C(F)(F)F)n1)N1CCN(Cc2ccccc2)CC1
d) C=CCn1cc(C(C)=O)c(=O)[nH]c1=O
Answer: c
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}