Using Nc1cccc(Nc2ncc(Br)cc2[N+](=O)[O-])c1, OB(O)c1ccc(F)cc1 to produce Nc1cccc(Nc2ncc(-c3ccc(F)cc3)cc2[N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.