Using COc1ccccc1CC(=O)N1CC2CC(CN=[N+]=[N-])CC(O)(c3ccccc3OC)C2C1 to produce COc1ccccc1CC(=O)N1CC2CC(CN)CC(O)(c3ccccc3OC)C2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.