Using COC(=O)C[C@@H](c1ccc(OCc2ccc3c(c2)CCC(OC)C3)cc1)c1nncn1C to produce COC1CCc2cc(COc3ccc([C@H](CC(=O)O)c4nncn4C)cc3)ccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.