Using CCOC(=O)N1CCc2c(sc(NC(=O)c3cccc(OC)c3)c2C#N)C1 to produce CCOC(=O)N1CCc2c(sc(NC(=O)c3cccc(O)c3)c2C#N)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.