preferred_name: a ganglioside Ac-O-8-GD3 <=> a ganglioside Ac-O-9-GD3
preferred_name_lc: a ganglioside ac-o-8-gd3 <=> a ganglioside ac-o-9-gd3
label: a ganglioside Ac-O-8-GD3 <=> a ganglioside Ac-O-9-GD3
label_lc: a ganglioside ac-o-8-gd3 <=> a ganglioside ac-o-9-gd3