Using Oc1ccc(F)cc1F, Cc1c(Br)cc(F)cc1[N+](=O)[O-] to produce Cc1c(Br)cc(Oc2ccc(F)cc2F)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.