The molecule is a high-mannose oligosaccharide that is beta-D-mannopyranose in which the hydrogens of hydroxy groups are replaced by a 3-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl group at position 6, a alpha-D-mannopyranosyl-(1->2)-alpha-D-mannopyranosyl-(1->2)-alpha-D-mannopyranosyl group at position 3, and a chitobiose group at position 1. It is an amino octasaccharide and a high-mannose oligosaccharide. It derives from an alpha-D-Manp-(1->6)-[alpha-D-Manp-(1->2)-alpha-D-Manp-(1->2)-alpha-D-Manp-(1->3)]-beta-D-Manp-(1->4)-beta-D-GlcpNAc-(1->4)-alpha-D-GlcpNAc.
N-[(2S,3R,4R,5S,6R)-5-[(2S,3R,4R,5S,6R)-3-acetamido-5-[(2S,3S,4S,5R,6R)-4-[(2R,3S,4S,5S,6R)-3-[(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-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[[(2S,3S,4S,5R,6R)-3,5-dihydroxy-6-(hydroxymethyl)-4-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxymethyl]-3,5-dihydroxyoxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,4-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide