Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (IC50 < 10uM)?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: O=C(CCc1ccccc1)Nc1ccnn1C1CCN(C/C=C/c2ccccc2)CC1
b: O=C(O)c1cccc(-n2c(/C=C/c3ccc([N+](=O)[O-])cc3)nc3ccccc3c2=O)c1
c: Cc1ccc(-n2c(SCC(=O)NCCN3C(=O)CSC3=O)nnc2-c2ccccc2F)cc1
d: Cc1ccc(OCC(=O)Nc2ccc([N+](=O)[O-])cn2)cc1C
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}