for the following products
((2R,3R)-3-(Benzoyloxy)-4,4-difluoro-5-oxotetrahydrofuran-2-yl)methyl benzoate | (2R)-2-[(Benzoyloxy)methyl]-4,4-difluoro-5-oxooxolan-3-yl benzoate | 2-Deoxy-2,2-difluoro-D-erythro-pentafuranous-1-ulose- | 2-Deoxy-2,2-difluoro-D-erythro-pentafuranous-1-ulose-3,5-dibenzoate | 2-Deoxy-2,2-difluoro-D-erythro-pentonic Acid γ-Lactone 3,5-Dibenzoate and 2-Deoxy-2,2-difluoro-D-erythro-pentofuranos-1-ulose-3,5-dibenzoate