The molecule is a glycosyl glycoside consisting of beta-D-galactopyranose and D-galactopyranose residues joined by a (1->1) glycosidic bond. It is a glycosyl glycoside and a partially-defined glycan. It derives from a beta-D-galactose and a D-galactopyranose.
(2R,3R,4S,5R)-2-(hydroxymethyl)-6-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-3,4,5-triol