The molecule is a N-acyl-15-methylhexadecasphing-4-enine-1-phosphocholine in which the acyl group has 20 carbons and 0 double bonds and is 2-hydroxylated. It derives from a 15-methylhexadecasphing-4-enine.
[(E,2S,3R)-3-hydroxy-2-(2-hydroxyicosanoylamino)-15-methylhexadec-4-enyl] 2-(trimethylazaniumyl)ethyl phosphate