(+)-(3aS,7aS)-4,4,7a-trimethyloctahydro-1H-inden-1-one

[(2S,3R,3aR,5R,6aR)-2-(tert-Butyl-diphenyl-silanyloxymethyl)-5-methoxy-hexahydro-furo[2,3-b]furan-3-yl]-((3aS,7aS)-4,4,7a-trimethyl-3a,4,5,6,7,7a-hexahydro-3H-inden-1-yl)-methanol