11alpha,12alpha-epoxy-3-O-beta-D-xylopyranosyl-(1-3)-alpha-L-rhamnopyranosyl-(1-2)-beta-D-xylopyranosyl-olean-28,13beta-olide
11alpha,12alpha-epoxy-3-o-beta-d-xylopyranosyl-(1-3)-alpha-l-rhamnopyranosyl-(1-2)-beta-d-xylopyranosyl-olean-28,13beta-olide