(5R,7R)-7-(tert-butyldimethylsilyloxy)-2-trimethylsilylbicyclo[3.3.0]oct-1-en-3-one

(1S,6aR)-1-((1S,2R)-2-Phenyl-cyclohexyloxy)-4,5,6,6a-tetrahydro-1H-pentalen-2-one