Using O=[N+]([O-])c1cccc(-c2cccc(-c3nc(-c4ccc(C(F)(F)F)cc4)cc(C(F)(F)F)n3)c2)c1 to produce Nc1cccc(-c2cccc(-c3nc(-c4ccc(C(F)(F)F)cc4)cc(C(F)(F)F)n3)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.