Using [I-], CC(C)(Oc1ccc(C(=O)c2ccc(Cl)cc2)cc1)C(=O)OCCl to produce CC(C)(Oc1ccc(C(=O)c2ccc(Cl)cc2)cc1)C(=O)OCI, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.