152645-84-6 Bruceanol D Picras-3-en-21-oic acid, 15-((3,4-dimethyl-1-oxo-2-pentenyl)oxy)-13,20-epoxy-1,11,12-trihydroxy-2,16-dioxo-, methyl ester, (1beta,11beta,12alpha,15beta(E))-