preferred_name: 3-O-beta-D-glucopyranosyl-(1-3)-beta-D-glucopyranosyl-28-O-alpha-L-rhamnopyranosyl-(1-3)-beta-D-xylopyranosyl-(1-4)-alpha-L-rhamnopyranosyl-(1-2)-alpha-L-arabinopyranosyl-16alpha-hydroxy protobassic acid