Using O=[N+]([O-])c1c(Cl)ccc2ncccc12, O=C(OO)c1cccc(Cl)c1 to produce O=[N+]([O-])c1c(Cl)ccc2c1ccc[n+]2[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.