(4bS,7R,8aS)-4b-(3-Benzyloxy-propyl)-7-methyl-4b,6,7,8,8a,9-hexahydro-indeno[2,1-b]pyridin-5-one

[(3S,5R)-2-(3-Benzyloxy-propyl)-5-methyl-3-prop-2-ynyl-cyclohex-1-enyloxy]-tert-butyl-dimethyl-silane