The molecule is an N-acyl-15-methylhexadecasphing-4-enine-1-phosphocholine in which the acyl group has 27 carbons and 0 double bonds. It derives from a 15-methylhexadecasphing-4-enine.
[(E,2S,3R)-2-(heptacosanoylamino)-3-hydroxy-15-methylhexadec-4-enyl] 2-(trimethylazaniumyl)ethyl phosphate