The molecule is a polyprenyl glycosyl phosphate consisting of a N-acetyl-D-fucosaminyl residue attached to undecaprenyl diphosphate via a glycosyl diphosphate linkage. It is a conjugate acid of a N-acetyl-D-fucosaminyl undecaprenyl diphosphate(2-).
[(3R,4R,5R,6R)-3-acetamido-4,5-dihydroxy-6-methyloxan-2-yl] [hydroxy-[(2Z,6Z,10Z,14Z,18Z,22Z,26Z,30Z,34E,38E)-3,7,11,15,19,23,27,31,35,39,43-undecamethyltetratetraconta-2,6,10,14,18,22,26,30,34,38,42-undecaenoxy]phosphoryl] hydrogen phosphate