The molecule is a glycosyl alditol consisting of alpha-D-glucopyranose and D-galactitol residues joined in sequence by a (1->6) glycosidic bond. It derives from a galactitol and an alpha-D-galactose.
(2S,3R,4S,5R)-6-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyhexane-1,2,3,4,5-pentol