(1beta,6alpha(E),12alpha)-1,12,20-Tris(acetyloxy)-6-((2-methyl-1-oxo-2-butenyl)oxy)picras-3-ene-2,11,16-trione 69423-71-8 6alpha-Tigloyloxychaparrinone 6beta-Tigloyloxychaparrinone Grandilactone A Grandilactone B Picras-3-ene-2,11,16-trione, 1,12,20-tris(acetyloxy)-6-((2-methyl-1-oxo-2-butenyl)oxy)-, (1beta,6alpha(E),12alpha)-