英文名称
2-O-benzyl 1-O-tert-butyl (2S)-5-methyl-3,4-dihydro-2H-pyrrol-1-ium-1,2-dicarboxylate;benzyl (2S)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-5-oxohexanoate;tert-butyl (2-methylpropan-2-yl)oxycarbonyl carbonate;(2S)-5-methylpyrrolidine-2-carboxylic acid