Showing structure for [(5as,5br,7ar,8r,11ar,11br,13r,13as,13br)-13-(acetyloxy)-5b,8,11a,13a-tetramethyl-3-oxo-1h,5h,5ah,6h,7h,7ah,9h,10h,11h,11bh,12h,13h,13bh-chryseno[1,2-c]furan-8-yl]methyl acetate