The molecule is a 1,2-diacyl-sn-glycerol in which the acyl groups at positions 1 and 2 are specifed as stearoyl and arachidonoyl respectively. It derives from an arachidonic acid and an octadecanoic acid.
[(2S)-1-hydroxy-3-octadecanoyloxypropan-2-yl] (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoate