Using CCOC(=O)Cc1ccc(Nc2ccnc(Nc3cc(OC)c(OC)c(OC)c3)n2)cc1 to produce COc1cc(Nc2nccc(Nc3ccc(CC(=O)O)cc3)n2)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.