The molecule is a 1-phosphatidyl-1D-myo-inositol 4-phosphate(3-) in which the phosphatidyl acyl groups at positions 1 and 2 are both specified as hexadecanoyl (palmitoyl). It is a conjugate base of a 1,2-dihexadecanoyl-sn-glycero-3-phospho-(1D-myo-inositol-4-phosphate).
[(2R,3R,5R,6S)-4-[[(2R)-2,3-di(hexadecanoyloxy)propoxy]-oxidophosphoryl]oxy-2,3,5,6-tetrahydroxycyclohexyl] phosphate