The molecule is an arabinotetraose in which the four arabinofuranose residues are in a beta(1->2), alpha(1->5) and alpha(1->5) linear sequence (with alpha-configuration at the reducing end). Corresponds to part of the lipoarabinomannam from Mycobacterium leprae and M. tuberculosis. It has a role as an epitope.
(2S,3S,4S,5R)-5-[[(2S,3S,4S,5R)-5-[[(2S,3S,4R,5R)-3-[(2S,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]oxolane-2,3,4-triol