The molecule is a N-acylsphingosine 1-phosphate(2-) in which the N-acyl group is specified as hexadecanoyl (palmitoyl). It is a conjugate base of a N-hexadecanoylsphingosine 1-phosphate.
[(E,2S,3R)-2-(hexadecanoylamino)-3-hydroxyoctadec-4-enyl] phosphate