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) COC(=O)c1ccc(-c2noc(CN(Cc3ccccn3)CC3CCCO3)n2)cc1
b) CN1CCN(Cc2nc3ccccc3c(=O)n2CC#N)CC1
c) CCOC(=O)C1CCN(S(=O)(=O)c2cn(C)c(C)n2)CC1
d) O=C(Cn1c(=O)oc2ccccc21)Nc1ccccc1Cl
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}