Synonyms: 1H-Pyrrole-1,2-dicarboxylicacid, 2,3-dihydro-, 1-(1,1-dimethylethyl) 2-ethyl ester, (S)-;1-tert-butyl 2-ethyl (2S)-2,3-dihydro-1H-pyrrole-1,2-dicarboxylate;1H-Pyrrole-1,2-dicarboxylic acid, 2,3-dihydro-, 1-(1,1-dimethylethyl) 2-ethyl ester, (2S)-;