19553-76-5 27325-41-3 34788-27-7 59202-61-8 GD1b Ganglioside Ganglioside GD1b (VAN) Ganglioside, GD1b II(3)(Neuaca2-8NeuAc)Gg4Cer II(3)Neu5Ac2GgOse4Cer