The molecule is a 1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate in which the phosphatidyl acyl groups at positions 1 and 2 are specified as stearoyl and arachidonoyl respectively. It derives from an octadecanoic acid and an arachidonic acid.
[(2R)-1-[[(2S,3R,5S,6S)-2,6-dihydroxy-3,4,5-triphosphonooxycyclohexyl]oxy-hydroxyphosphoryl]oxy-3-octadecanoyloxypropan-2-yl] (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoate