The molecule is a 1-O-acyl-N-acylsphingosine in which the N- and O-acyl groups are specified as acetyl and stearoyl (octadecanoyl) respectively. It derives from a N-acetylsphingosine and an octadecanoic acid.
[(E,2S,3R)-2-acetamido-3-hydroxyoctadec-4-enyl] octadecanoate