has role ->4)-alpha-D-Galp-(1->4)-beta-D-Galp-(1->4)-beta-D-Glcp-yl group An organic group forming part of, and a proposed epitope within, globoside GM1. ->4)-alpha-D-galactopyranosyl-(1->4)-beta-D-galactopyranosylp-(1->4)-beta-D-glucopyranosyl ->4)-alpha-D-Gal-(1->4)-beta-D-Gal-(1->4)-beta-D-Glc-yl ->4)-alpha-D-Gal-(1->4)-beta-D-Gal-(1->4)-beta-D-Glc-yl group CHEBI:142533 ->4)-alpha-D-galactosyl-(1->4)-beta-D-galactosylp-(1->4)-beta-D-glucosyl organic group epitope