The molecule is a mannooligosaccharide derivative consisting of a chain of three D-mannose residues linked sequentially alpha(1->2) and alpha(1->3), with an alpha-D-mannosyl-(1->2)-alpha-D-mannosyl unit linked (1->6) to the mannose residue at the reducing end, this reducing-end residue also being beta-linked to a 5-aminopentyl group.
(2R,3S,4S,5S,6R)-2-[(2S,3S,4S,5S,6R)-2-[[(2R,3R,4S,5S,6R)-6-(5-aminopentoxy)-4-[(2R,3S,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,5-dihydroxyoxan-2-yl]methoxy]-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol