The molecule is a 1,2-diacyl-sn-glycero-3-phosphocholine in which the phosphatidyl acyl groups at positions 1 and 2 are specified as palmitoyl and 8-epi-prostaglandin F2alpha respectively. It derives from an 8-epi-prostaglandin F2alpha and a hexadecanoic acid.
[(2R)-2-[(Z)-7-[(1S,2R,3R,5S)-3,5-dihydroxy-2-[(E,3S)-3-hydroxyoct-1-enyl]cyclopentyl]hept-5-enoyl]oxy-3-hexadecanoyloxypropyl] 2-(trimethylazaniumyl)ethyl phosphate