Using COc1cc2c(cc1OC)C(=O)C(Cc1ccncc1)C2, O=C(OO)c1cccc(Cl)c1 to produce COc1cc2c(cc1OC)C(=O)C(Cc1cc[n+]([O-])cc1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.