Using COC(=O)c1nn(CCN=[N+]=[N-])c(C(=O)OC)c1OCc1ccccc1 to produce COC(=O)c1nn2c(c1OCc1ccccc1)C(=O)NCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.