tert-butyl 4-benzyl-octahydropyrrolo[3,4-b]morpholine-6-carboxylate; tert-Butyl 4-benzylhexahydropyrrolo[3,4-b][1,4]oxazine-6(2H)-carboxylate; Pyrrolo[3,4-b]-1,4-oxazine-6(2H)-carboxylic acid, hexahydro-4-(phenylmethyl)-, 1,1-dimethylethyl ester; tert-butyl 4-Benzyl-2,3,4a,5,7,7a-hexahydropyrrolo[3,4-b][1,4]oxazine-6-carboxylate;