The molecule is an oligosaccharide that is a branched dodecasaccharide consisting of a block of six arabinofuranose residues linked to a block of six mannopyranose residues as shown in the structure.
(2S,3S,4S,5S,6R)-6-[[(2S,3S,4S,5S,6R)-6-[[(2S,3S,4S,5S,6R)-6-[[(2S,3S,4S,5S,6R)-3-[(2R,3S,4S,5R)-5-[[(2S,3S,4S,5R)-5-[[(2S,3S,4S,5R)-5-[[(2S,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]oxymethyl]-4-[(2R,3S,4S,5R)-5-[[(2S,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxy-3-hydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxy-4,5-dihydroxy-6-[[(2S,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]oxan-2-yl]oxymethyl]-4,5-dihydroxy-3-[(2S,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxymethyl]oxane-2,3,4,5-tetrol