((1R,3S,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5S)-5,6-dimethylheptan-2-yl)-7a-methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldimethylsilane)

((1R,3S,E)-5-((E)-2-((1R,3aS,7aR)-1-((2R,5S)-5,6-dimethylheptan-2-yl)-7a-methyldihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-methylenecyclohexane-1,3-diyl)bis(oxy)bis(tert-butyldimethylsilane)