(1R,3S,4R,5S,10R,11R)-1-Acetyloxy-7-oxoprenops-8-ene 1,3,3,5-tetramethyl-2-oxooctahydro-1H-1,4-ethenoinden-7-yl acetate 1,4-etheno-2H-inden-2-one, 7-(acetyloxy)-1,3,3a,4,5,6,7,7a-octahydro-1,3,3,5-tetramethyl- Acetic acid 1,3,3,5-tetramethyl-2-oxo-octahydro-1,4-etheno-inden-7-yl ester InChI=1/C17H24O3/c1-9-8-12(20-10(2)18)14-13-11(9)6-7-17(14,5)15(19)16(13,3)4/h6-7,9,11-14H,8H2,1-5H