Using CC(C)(C)OC(=O)N1C[C@H](NC(=O)c2ccc(Cl)s2)[C@@H](O)C1, O=S(=O)(OCC(F)F)C(F)(F)F to produce CC(C)(C)OC(=O)N1C[C@H](NC(=O)c2ccc(Cl)s2)[C@@H](OCC(F)F)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.