(S)-2-Methyl-butyric acid (1S,4aR,7S,8S,8aS)-7-methyl-8-{2-[(2S,4S)-6-oxo-4-(tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-yl]-ethyl}-1,2,3,4,4a,7,8,8a-octahydro-naphthalen-1-yl ester

(1S,4aR,7S,8S,8aS)-8-[(3S,5R)-7-(tert-Butyl-diphenyl-silanyloxy)-3-hydroxy-5-(tetrahydro-pyran-2-yloxy)-heptyl]-7-methyl-1,2,3,4,4a,7,8,8a-octahydro-naphthalen-1-ol