The molecule is a glycosylceramide in which alpha-D-glucuronic acid is linked glycosidically to a 3-hydroxy-2-{[(2R)-2-hydroxynonadecanoyl]amino}icosyl moiety. Present in the cell walls of Sphingomonas bacteria.
(2S,3S,4S,5R,6S)-3,4,5-trihydroxy-6-[(2S,3R)-3-hydroxy-2-[[(2R)-2-hydroxynonadecanoyl]amino]icosoxy]oxane-2-carboxylic acid