4-Hydroxy-1,1-dimethylpyrrolidinium-2-carboxylate

(2S,4R)-4-Hydroxy-2-carboxylato-1,1-dimethylpyrrolidin-1-ium

(2S-trans)-2-carboxylato-4-hydroxy-1,1-dimethylpyrrolidinium

Pyrrolidinium, 2-carboxy-4-hydroxy-1,1-dimethyl-, inner salt, (2S,4S)-