The molecule is a glycosylgalactose that is alpha-D-galactopyranose in which the hydroxy group at position 3 has been converted into the corresponding beta-D-galactopyranoside. It is a glycoside and a glycosylgalactose.
(2S,3R,4S,5S,6R)-6-(hydroxymethyl)-4-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2,3,5-triol