The molecule is (E)-3,7,11,15-tetramethylhexadec-2-en-1-yl diphosphate in which both stereocentres have (R)-configuration. It derives from a phytol. It is a conjugate acid of a phytyl diphosphate(3-).
phosphono [(E,7R,11R)-3,7,11,15-tetramethylhexadec-2-enyl] hydrogen phosphate