The molecule is a branched hexasaccharide consisting of a beta-D-glucose residue, two beta-D-mannose residues, an alpha-L-rhamnose residue and a beta-D-glucose residue (at the reducing end), all joined by sequential (1->3) linkages, to the mannose residue nearest to the non-reducing end is also connected an alpha-D-mannose residue via a (1->2) linkage.
(2R,3R,4S,5R,6R)-4-[(2S,3R,4R,5S,6S)-4-[(2S,3S,4S,5R,6R)-3,5-dihydroxy-4-[(2S,3S,4S,5R,6R)-5-hydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,5-dihydroxy-6-methyloxan-2-yl]oxy-6-(hydroxymethyl)oxane-2,3,5-triol