The molecule is a glycosyl alditol consisting of beta-D-galactofuranose and D-altritol residues joined in sequence by a (1->4) glycosidic bond. It derives from a beta-D-galactofuranose and a D-altritol.
(2R,3S,4R,5R)-4-[(2S,3R,4R,5S)-5-[(1R)-1,2-dihydroxyethyl]-3,4-dihydroxyoxolan-2-yl]oxyhexane-1,2,3,5,6-pentol