Using CC(C)(C)OC(=O)N1CC(OS(C)(=O)=O)C1, O=C(O)c1cc(O)cc(S(F)(F)(F)(F)F)c1 to produce CC(C)(C)OC(=O)N1CC(Oc2cc(C(=O)O)cc(S(F)(F)(F)(F)F)c2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.