Using CS(=O)(=O)N1CCN(c2ccc(OC(F)(F)C(F)F)cc2)CC1, COC(=O)C1CCOCC1 to produce O=C(CS(=O)(=O)N1CCN(c2ccc(OC(F)(F)C(F)F)cc2)CC1)C1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.