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 other words.
Options:
a Cl.c1ccc(-c2nnc(CN3CCCCC3)o2)cc1
b O=C(CSc1nc(=O)n2ccccc2n1)N1N=C(c2cccs2)CC1c1ccc(F)cc1
c O=C(CCCn1cnc([N+](=O)[O-])n1)Nc1cccc(O)c1
d COc1ccc(C(CNC(=O)c2ccc(S(=O)(=O)N(C)C)cc2)N(C)C)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}