Using COC(=O)c1cc(S(C)(=O)=O)ccc1OCC(F)(F)C(F)(F)F to produce CS(=O)(=O)c1ccc(OCC(F)(F)C(F)(F)F)c(C(=O)O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.