The molecule is an oligosaccharide (hexadecasaccharide) consisting of a linear sequence of six D-arabinofuranose residues all linked alpha(1->5), to the residue distal from the reducing end are added via alpha(1->3) and alpha(1->5) linkages two linear sequences of five D-arabinofuranose residues, again all linked alpha(1->5).
(3S,4S,5R)-5-[[(2S,3S,4S,5R)-5-[[(2S,3S,4S,5R)-5-[[(2S,3S,4S,5R)-5-[[(2S,3S,4S,5R)-5-[[(2S,3S,4S,5R)-4-[(2S,3S,4S,5R)-5-[[(2S,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]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxy-5-[[(2S,3S,4S,5R)-5-[[(2S,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]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3-hydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]oxolane-2,3,4-triol