Using CCOC(=O)[C@@H]1[C@@H]2C[C@@H](O)[C@@H](C2)N1C(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)N1[C@@H]2C[C@@H](C[C@H]2O)[C@H]1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.