a ganglioside Ac-O-7-GD2(d18:1(4E)) <=> a ganglioside Ac-O-8-GD2(d18:1(4E))
a ganglioside ac-o-7-gd2(d18:1(4e)) <=> a ganglioside ac-o-8-gd2(d18:1(4e))
a ganglioside Ac-O-7-GD2(d18:1(4E)) <=> a ganglioside Ac-O-8-GD2(d18:1(4E))
a ganglioside ac-o-7-gd2(d18:1(4e)) <=> a ganglioside ac-o-8-gd2(d18:1(4e))