The molecule is a glycosylgalactose consisting of beta-D-galactofuranose and alpha-D-galactopyranose residues joined in sequence by a (1->3) glycosidic bond. It derives from an alpha-D-galactose and a beta-D-galactofuranose.
(2S,3R,4S,5S,6R)-4-[(2S,3R,4R,5S)-5-[(1R)-1,2-dihydroxyethyl]-3,4-dihydroxyoxolan-2-yl]oxy-6-(hydroxymethyl)oxane-2,3,5-triol