Using [NH4+], O=[N+]([O-])c1c(OC(F)(F)F)ccc2nc(Cl)sc12 to produce Nc1nc2ccc(OC(F)(F)F)c([N+](=O)[O-])c2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.