3-O-(beta-D-xylopyranosyl(1-3)-beta-D-galactopyranosyl(1-4)-beta-D-glucopyranosyl(1-3))(beta-D-glucopyranosyl(1-2))-alpha-L-arabinopyranosyloleanolic acid 28-O-alpha-L-rhamnopyranosyl(1-4)-beta-D-glucopyranosyl(1-6)-beta-D-glucopyranoside