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, or c without using any additional words.
Options:
[a] Nc1c2c(nc3ccn(-c4ccccc4)c(=O)c13)CCCCC2
[b] COc1ccc(Oc2nc(-c3cccnc3)nc3ccccc23)c([N+](=O)[O-])c1
[c] COc1ccc(C(=O)/C=C/c2ccccc2OC)c(OC(=O)c2ccc([N+](=O)[O-])cc2)c1
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}