Using CCOC(=O)c1cncc(-c2ccc(OC(F)(F)F)cc2)c1 to produce CCOC(=O)C1CNCC(c2ccc(OC(F)(F)F)cc2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.