for the following products
(2R)-2-[(Benzoyloxy)methyl]-4,4-difluoro-5-oxooxolan-3-yl benzoate | 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