The molecule is a sialotriaosylceramide that is ganglioside GM2 (18:0) in which the sialo N-acetyl group has been deacetylated. It derives from a ganglioside GM2 (18:0).
(2S,4S,5R,6R)-2-[(2S,3R,4R,5S,6R)-5-[(2S,3R,4R,5R,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2-[(2R,3S,4R,5R,6R)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(E,2S,3R)-3-hydroxy-2-(octadecanoylamino)octadec-4-enoxy]oxan-3-yl]oxy-3-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-5-amino-4-hydroxy-6-(hydroxymethyl)oxane-2-carboxylic acid