Using O=[N+]([O-])c1cc(Oc2cccc(Oc3cc([N+](=O)[O-])cc(C(F)(F)F)c3)c2)cc(C(F)(F)F)c1 to produce Nc1cc(Oc2cccc(Oc3cc(N)cc(C(F)(F)F)c3)c2)cc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.