26-O-beta-D-glucopyranosyl-(25S)-5alpha-furostane-3beta,22alpha,26-triol-3-O-beta-D-xylopyranosyl-1-3-(beta-D-xylopyranosyl-1-2)-beta-D-glucopyranosyl-1-4-(alpha-L-rhamnopyranosyl-1-2)-beta-D-galactopyranoside