a ganglioside Ac-O-8-GD1b = a ganglioside Ac-O-9-GD1b
a ganglioside ac-o-8-gd1b = a ganglioside ac-o-9-gd1b
a ganglioside Ac-O-8-GD1b = a ganglioside Ac-O-9-GD1b
a ganglioside ac-o-8-gd1b = a ganglioside ac-o-9-gd1b