Using CCOC(=O)COc1ccc2c(c1)C[C@@H](NCC(O)c1ccc(OC3CCCCO3)cc1)CC2 to produce CCOC(=O)COc1ccc2c(c1)C[C@@H](NCC(O)c1ccc(O)cc1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.