3-O-alpha-L-arabinopyranosyl-(1-2)-(beta-D-galactopyranosyl-(1-3))-beta-D-glucuronopyranosylgypsogenin-28-O-beta-D-xylopyranosyl-(1-3)-beta-D-xylopyranosyl-(1-4)-alpha-L-rhamnopyranosyl-(1-2)-beta-D-fucopyranoside