N,9-O-diacetylneuraminyl-(2->8)-N-acetylneuraminyl-(2->8)-N-acetylneuraminyl-(2->3)- beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1')-N-acylsphingosi
n,9-o-diacetylneuraminyl-(2->8)-n-acetylneuraminyl-(2->8)-n-acetylneuraminyl-(2->3)- beta-d-galactosyl-(1->4)-beta-d-glucosyl-(1<->1')-n-acylsphingosi
A sialodiosylceramide consisting of the pentasaccharide α-Neu5N,9Ac<small><sub>2</sub></small>-(2→8)-α-Neu5NAc-(2→8)-α-Neu5NAc-(2→3)-β-<small>D</small>-Gal-(1→4)-β-<small>D</small>-Glc attached to the primary hydroxy function of ceramide.