(E)-4-[(2R,4aR,6S,7R,9aS)-7-(tert-Butyl-dimethyl-silanyloxy)-2-phenyl-hexahydro-1,3,5-trioxa-benzocyclohepten-6-yl]-2-methyl-but-2-en-1-ol

4-((4aR,5aS,6aR,8S,9R,10aS,11aR,13aS)-9-Hydroxy-2,2,9,10a-tetramethyl-dodecahydro-1,3,5,7,11-pentaoxa-benzo[4,5]cyclohepta[1,2-b]naphthalen-8-yl)-butyric acid