(+)-(1S,4R,4aS,5R,8S,8aR)-5-Acetoxy-8-tert-butyldimethylsilyloxy-1,4,4a,5,6,8,8a-octahydro-endo-1,4-methanonaphthalene

(1R,4S,4aR,5S,8aS)-5,8-Bis-(tert-butyl-dimethyl-silanyloxy)-1,4,4a,5,6,8a-hexahydro-1,4-methano-naphthalene