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