(1S.5R.Z)-5-(tert-butyldimethylsilyloxy)-3-((E)-2-((1R.3aS.7aR)-1-((R)-6-hydroxy-6-methylheptan-2-yl)-7a-methyldihydro-1H-inden-4(2H.5H.6H.7H.7aH)-ylidene)ethylidene)-2-methylenecyclohexanol