The molecule is a trisaccharide consisting of D-mannose at the reducing end having a beta-D-galactofuranosyl-(1->6)-alpha-D-mannosyl moiety attached at the 6-position. It has a role as a carbohydrate allergen.
(3S,4S,5S,6R)-6-[[(2S,3S,4S,5S,6R)-6-[[(2R,3R,4R,5S)-5-[(1R)-1,2-dihydroxyethyl]-3,4-dihydroxyoxolan-2-yl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxymethyl]oxane-2,3,4,5-tetrol