Using O=[N+]([O-])c1cccc(-c2nc(Cl)ncc2Nc2cccc(F)c2)c1 to produce Nc1cccc(-c2nc(Cl)ncc2Nc2cccc(F)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.