The molecule is an alpha-D-glucuronosyl diglyceride in which the acyl groups at the 1- and 2-positions are stearoyl (octadecanoyl) and palmitoyl (hexadecanoyl) respectively. It has a role as an antigen.
(2S,3S,4S,5R,6S)-6-[(2S)-2-hexadecanoyloxy-3-octadecanoyloxypropoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid