Synonyms: 1,2-Pyrrolidinedicarboxylicacid, 4-hydroxy-3,3-dimethyl-, 1-(1,1-dimethylethyl) ester, (2S-trans)-;(4R)-Hydroxy-3,3-dimethylpyrrolidine-1,(2S)-dicarboxylic acid 1-tert-butylester;(2S,4R)-4-Hydroxy-3,3-dimethyl-1,2-pyrrolidinedicarboxylic acid 1-(1,1-dimethylethyl) ester;