Using COC(=O)CC(=O)CCl, COc1cc(S)cc(C(F)(F)F)c1 to produce COC(=O)CC(=O)CSc1cc(OC)cc(C(F)(F)F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.