The molecule is a glycoside that consists of the linear trisaccharide beta-D-Manp-(1->2)-beta-D-Manp-(1->2)-alpha-D-Manp having a 2-aminoethoxy moiety at the reducing-end anomeric centre. It derives from a beta-D-Manp-(1->2)-beta-D-Manp-(1->2)-alpha-D-Manp and an ethanolamine.
(2S,3S,4S,5S,6R)-2-[(2S,3S,4S,5S,6R)-2-[(2S,3S,4S,5S,6R)-2-(2-aminoethoxy)-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol