Using CCOC(=O)c1cnn(-c2ccc(OC(F)(F)F)cc2)c1N to produce CCOC(=O)c1cnn(-c2ccc(OC(F)(F)F)cc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.