The molecule is dianion of dTDP-D-fucose arising from deprotonation of the diphosphate OH groups; major species at pH 7.3. It is a conjugate base of a dTDP-D-fucose.
[[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-oxidophosphoryl] [(3R,4S,5R,6R)-3,4,5-trihydroxy-6-methyloxan-2-yl] phosphate