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