The molecule is a polyprenyl glycosyl phosphate consisting of the heptasaccharide [alpha-D-GalNAc-(1->4)]2-[beta-D-Glc-(1->3)]-[alpha-D-GalNAc-(1->4)]2-alpha-D-GalNAc-(1->3)-alpha-D-diNAcBac linked via a diphospho group to tritrans,heptacis-undecaprenol. It is a conjugate acid of an [alpha-D-GalNAc-(1->4)]2-[beta-D-Glc-(1->3)]-[alpha-D-GalNAc-(1->4)]2-alpha-D-GalNAc-(1->3)-alpha-D-diNAcBac-tritrans,heptacis-undecaprenyl diphosphate(2-).
[(2R,3R,4S,5R,6R)-3,5-diacetamido-4-[(2S,3R,4R,5R,6R)-3-acetamido-5-[(2R,3R,4R,5R,6R)-3-acetamido-5-[(2R,3R,4R,5R,6R)-3-acetamido-5-[(2R,3R,4R,5R,6R)-3-acetamido-5-[(2R,3R,4R,5R,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-(hydroxymethyl)-4-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-methyloxan-2-yl] [hydroxy-[(2Z,6Z,10Z,14Z,18Z,22Z,26Z,30E,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