(2R,5S)-2-Benzyloxymethyl-5-cyano-pyrrolidine-1-carboxylic acid tert-butyl ester

(3R,3aR,4S,7S,7aS)-7a-Acetyl-3-benzyloxymethyl-7-[(E)-3-(tert-butyl-dimethyl-silanyloxy)-propenyl]-4-methyl-5-trimethylsilanylmethyl-2,3,3a,4,7,7a-hexahydro-isoindol-1-one