Using O=[N+]([O-])c1cc(Br)c(OS(=O)(=O)C(F)(F)F)c(Br)c1, [I-] to produce O=[N+]([O-])c1cc(Br)c(I)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.