(3RS,3aRS,5aRS,9bRS)-dodecahydro-6,6,9a-trimethylnaphtho<1,2-c>furan-3-ol

dimethyl (1S,4aR,8aR)-1,4,4a,5,6,7,8,8a-octahydro-5,5,8a-trimethylnaphthalene-1,2-dicarboxylate

Dimethoxycarbonyl-1,2 trimethyl-5,5,8a Decahydronaphtalene-(1RS,2SR,4aSR,8aRS)