Using CCOC(=O)N1CCC(N=[N+]=[N-])C(OCC(=O)OC(C)(C)C)C1 to produce CCOC(=O)N1CCC(N)C(OCC(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.