Using CCOC(=O)[C@@H]1CN(C(=O)OC(C)(C)C)C[C@H]1C1CC1 to produce CC(C)(C)OC(=O)N1C[C@@H](CO)[C@H](C2CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.