The molecule is a sphingomyelin d18:1 obtained by formal condensation of the carboxy group of pentacosanoic acid with the amino group of sphingosine. It is a sphingomyelin d18:1 and a sphingomyelin 43:1. It derives from a pentacosanoic acid.
[(E,2S,3R)-3-hydroxy-2-(pentacosanoylamino)octadec-4-enyl] 2-(trimethylazaniumyl)ethyl phosphate