Using CCOC(=O)C1(NC2CC[C@@H](N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)[C@@H](N)C2)CC1 to produce CCOC(=O)C1(NC2CC[C@@H](N)[C@@H](N)C2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.