129898-66-4 Ceramide, 1-O-(O-beta-D-galactopyranosyl-(1-4)-O-2-(acetylamino)-2-deoxy-beta-D-glucopyranosyl-(1-3)-O-beta-D-galactopyranosyl-(1-3)-O-2-(acetylamino)-2-deoxy-beta-D-galactopyranosyl-(1-4)-O-(N-(hydroxyacetyl)-alpha-neuraminosyl-(2-3))-O-beta-D-galactopyranosyl-(1-4)-beta-D-glucopyranosyl)- Lactosaminyl-G(M1) Lactosaminyl-GM1