The molecule is a mannotriose that is alpha-D-mannopyranose in which the hydroxy groups at positions 2 and 4 have each been converted into the corresponding alpha-D-mannopyranoside. It derives from an alpha-D-Manp-(1->4)-alpha-D-Manp and an alpha-D-Manp-(1->2)-alpha-D-Manp.
(2R,3S,4S,5S,6R)-2-[(2R,3S,4S,5S,6S)-4,6-dihydroxy-2-(hydroxymethyl)-5-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol