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