Using COC(=O)C(=O)CC(=O)c1ccc(OC(F)(F)F)cc1, NO to produce COC(=O)c1cc(-c2ccc(OC(F)(F)F)cc2)on1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.