Using O=S(Cl)Cl, CCc1sc(-c2ccc(C(F)(F)F)cc2)cc1C(O)C1CCCCC1 to produce CCc1sc(-c2ccc(C(F)(F)F)cc2)cc1C(Cl)C1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.