Using CCOC(=O)c1cc(OC)c(OCc2nc(C)c(C)nc2C)c(OC)c1 to produce COc1cc(C(=O)O)cc(OC)c1OCc1nc(C)c(C)nc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.