2-Azabicyclo[3.1.0]hexane-2,3-dicarboxylic acid, 2-(1,1-dimethylethyl) ester, (1S,3S,5S)-
2-Azabicyclo[3.1.0]hexane-2,3-dicarboxylic acid, 2-(1,1-dimethylethyl) ester, [1S-(1α,3β,5α)]-
2-(1,1-Dimethylethyl) (1S,3S,5S)-2-azabicyclo[3.1.0]hexane-2,3-dicarboxylate
(1S,3S,5S)-2-(tert-Butoxycarbonyl)-2-azabicyclo[3.1.0]hexane-3-carboxylic acid