Using COc1ccc(F)c(-c2cc(F)cc(C(F)F)c2)c1, O=C1CCC(=O)N1I to produce COc1cc(-c2cc(F)cc(C(F)F)c2)c(F)cc1I, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.