Using O=C1OC(CI)CC1=C1O[C@@H]2CC(=O)N2C1C(=O)OCc1ccccc1, [N-]=[N+]=[N-] to produce [N-]=[N+]=NCC1CC(=C2O[C@@H]3CC(=O)N3C2C(=O)OCc2ccccc2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.