The molecule is a 1-phosphatidyl-1D-myo-inositol 4-phosphate 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. It is a conjugate acid of a 1-stearoyl-2-arachidonoyl-sn-glycero-3-phospho-1D-myo-inositol 4-phosphate(3-).
[(2R)-1-[hydroxy-[(2R,3R,5S,6R)-2,3,5,6-tetrahydroxy-4-phosphonooxycyclohexyl]oxyphosphoryl]oxy-3-octadecanoyloxypropan-2-yl] (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoate