Using CCOC(=O)[C@@H]1OC(c2ccc(OC)cc2)N(C(=O)OC(C)(C)C)[C@H]1C1CC1 to produce COc1ccc(C2O[C@@H](C(=O)O)[C@H](C3CC3)N2C(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.