Using [I-], Cc1ccccc1-c1cc(Cl)ncc1N(C)C(=O)c1cc(C(F)(F)F)cc(C(F)(F)F)c1 to produce Cc1ccccc1-c1cc(I)ncc1N(C)C(=O)c1cc(C(F)(F)F)cc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.