(1S,2aS,2a1S,5aR,6S,7aR,8S)-8-bromo-5-methyl-1,2a,2a1,3,5a,6,7,7a-octahydro-1,6-methanoindeno[7,1-bc]furan

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