Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (IC50 less than 10uM)?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a: CN(CCC#N)C(=O)COC(=O)c1ccc(Cl)c(S(=O)(=O)N(C)c2ccccc2)c1
b: COc1ccccc1CCNC(=O)CCn1nc(C)c2c(C)n(-c3ccccc3)nc2c1=O
c: Cn1c2ccccc2c2c(C(=O)N3CCN(c4ccccc4)CC3)cn(C3CCCC3)c(=O)c21
d: O=C(CCS(=O)(=O)c1ccccc1)Nc1nc2ccc(F)cc2s1
Answer: a
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}