Using CC(C)(C)OC(=O)N1CCN(c2c([N+](=O)[O-])cnn2CC(F)F)CC(O)C1, COCCN(CCOC)S(F)(F)F to produce CC(C)(C)OC(=O)N1CCN(c2c([N+](=O)[O-])cnn2CC(F)F)CC(F)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.