Using CC(=O)OC(CCCOS(=O)(=O)c1ccc(C)cc1)COc1ccc(F)cc1, [I-] to produce CC(=O)OC(CCCI)COc1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.