The molecule is a glycosylgalactose that is beta-D-galactopyranose in which the hydroxy group at position 3 has been converted into the corresponding alpha-L-arabinopyranosyl derivative. It derives from a beta-D-galactose and an alpha-L-arabinopyranose.
(2R,3R,4S,5S,6R)-6-(hydroxymethyl)-4-[(2S,3R,4S,5S)-3,4,5-trihydroxyoxan-2-yl]oxyoxane-2,3,5-triol