The molecule is a branched pentasaccharide comprised of an alpha-D-glucosyl-(1->4)-beta-D-glucosyl-(1->4)-alpha-D-mannosyl-(1->2)-alpha-D-mannose tetrasaccharide chain, on to the non-reducing mannosyl residue of which is attached an abequosyl residue via a (1->3) linkage.
(2S,3S,4S,5S,6R)-3-[(2R,3S,4R,5R,6R)-5-[(2S,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-4-[(2R,3R,5R,6R)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-3-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-(hydroxymethyl)oxane-2,4,5-triol