The molecule is an N-glycosylated dialkylglycerophosphoethanolamine in which the alkyl groups are hexadecyl, the glycerol core has sn stereochemistry and the phosphoethanolamine unit is at position 3 and substituted on nitrogen with the branched undecasaccharide alpha-Neu5Ac-(2->6)-beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[alpha-Neu5Ac-(2->6)-beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc. It derives from a 1,2-dihexadecyl-sn-glycero-3-phosphoethanolamine.
(2R,4S,5R,6R)-5-acetamido-2-[[(2R,3R,4S,5R,6S)-6-[(2R,3S,4R,5R,6S)-5-acetamido-6-[(2S,3S,4S,5S,6R)-2-[[(2R,3R,4S,5S,6S)-4-[(2R,3S,4S,5S,6R)-3-[(2S,3R,4R,5S,6R)-3-acetamido-5-[(2S,3R,4S,5R,6R)-6-[[(2R,4S,5R,6R)-5-acetamido-2-carboxy-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxan-2-yl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[(2R,3S,4R,5R,6S)-5-acetamido-6-[(2R,3S,4R,5R)-5-acetamido-6-[2-[[(2R)-2,3-dihexadecoxypropoxy]-hydroxyphosphoryl]oxyethylamino]-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,5-dihydroxyoxan-2-yl]methoxy]-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,4,5-trihydroxyoxan-2-yl]methoxy]-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid