Using CC(C)(C)C(=O)Nc1ccc(Cl)c(C(F)(F)F)c1, II to produce CC(C)(C)C(=O)Nc1ccc(Cl)c(C(F)(F)F)c1I, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.