Using CC(C)C(=O)OC(=O)C(C)C, CC(C)(C)OC(=O)N[C@H]1CC[C@@H](N)CC1 to produce CC(C)C(=O)N[C@H]1CC[C@@H](N)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.