(3aR,10aS,10bR)-octahydro-2H-furo[3,2-c]pyrrolo[1,2-a]azepine-2,8(1H)-dione

((9R,9aS)-3-Oxo-2,3,5,6,9,9a-hexahydro-1H-pyrrolo[1,2-a]azepin-9-yl)-acetic acid

((9R,9aS)-3-Oxo-2,3,5,6,9,9a-hexahydro-1H-pyrrolo[1,2-a]azepin-9-yl)-acetic acid methyl ester

(3aS,10aS)-3a,4,5,6,10,10a-hexahydro-2H-furo[3,2-c]pyrrolo[1,2-a]azepine-2,8(9H)dione

(3aR,10aS,10bS)-octahydro-2H-furo[3,2-c]pyrrolo[1,2-a]azepine-2,8(1H)-dione