(1S,2R,4aS,6R,8aR)-methyl 1,6-dimethyl-5-oxo-2-((E)-prop-1-en-1-yl)-1,2,4a,5,6,7,8,8a-octahydronaphthalene-1-carboxylate

(1S,2R,4aS,8aR)-trimethylsilyl 1,6-dimethyl-2-((E)-prop-1-en-1-yl)-5-((trimethylsilyl)oxy)-1,2,4a,7,8,8a-hexahydronaphthalene-1-carboxylate