The molecule is alpha-Neup5Gc-(2->6)-D-GalpNAc in which the anomeric configuration at the reducing end is alpha. It has a role as an epitope.
(2R,4S,5R,6R)-2-[[(2R,3R,4R,5R,6S)-5-acetamido-3,4,6-trihydroxyoxan-2-yl]methoxy]-4-hydroxy-5-[(2-hydroxyacetyl)amino]-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid