Using CC1CCC2OC2CN1C(=O)OCc1ccccc1, [N-]=[N+]=[N-] to produce CC1CCC(N=[N+]=[N-])C(O)CN1C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.