Using O=C(OO)c1cccc(Cl)c1, Cc1cnnc2c1C(=O)CC(c1ccccc1Cl)C2 to produce Cc1cn[n+]([O-])c2c1C(=O)CC(c1ccccc1Cl)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.