The molecule is a glycosylgalactose consisting of alpha-D-galactose having an alpha-L-rhamnosyl attached at the 3-position. It has a role as an epitope.
(2S,3R,4R,5R,6S)-2-methyl-6-[(2S,3R,4S,5S,6R)-2,3,5-trihydroxy-6-(hydroxymethyl)oxan-4-yl]oxyoxane-3,4,5-triol