Using CCOC(=O)c1ccc(OCC2CC(OCc3ccccc3)CN2C(=O)OC(C)(C)C)c(OC)c1 to produce CCOC(=O)c1ccc(OCC2CC(O)CN2C(=O)OC(C)(C)C)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.