4-Acetyl-5,6,7,8-tetrahydro-quinoline-2-carboxylic acid methyl ester

(1aS,7bR)-4-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-1a,7b-dihydro-1-oxa-7-aza-cyclopropa[a]naphthalene-6-carboxylic acid methyl ester