Using Oc1ccc(F)cc1F, COC(=O)C(C)(Br)c1ccc(S(C)(=O)=O)cc1 to produce COC(=O)C(C)(Oc1ccc(F)cc1F)c1ccc(S(C)(=O)=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.