Using COC(=O)C(C(=O)Cc1ccccc1)C1CCc2cc(OC)ccc2C1C#N to produce COc1ccc2c(c1)CCC(CC(=O)Cc1ccccc1)C2C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.