Using Cc1ccc(S(=O)(=O)OCCF)cc1, CC(C)(C)OC(=O)N1CCNC(=O)C1 to produce CC(C)(C)OC(=O)N1CCN(CCF)C(=O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.