GLAUCARUBINONE,2'-ACETYL Glaucarubinone-2'-acetate NSC194251 Picras-3-ene-2,16-dione, 15-[2-(acetyloxy)-2-methyl-1-oxobutoxy]-11,20-epoxy-1,11,12-trihydroxy-, (1.beta.,11.beta.,12.alpha.,15.beta.)-