Using O=S(Cl)Cl, CCOc1ccc(C(O)(COCc2cccc(Oc3ccccc3)c2)C(F)(F)F)cc1 to produce CCOc1ccc(C(Cl)(COCc2cccc(Oc3ccccc3)c2)C(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.