The molecule is a trimethyl-substituted thiazolidine carboxylic acid derived by cleavage of and loss of C=O from the azetidine ring of penicillanic acid. It is a member of thiazolidines and a monocarboxylic acid. It derives from a penicillanic acid.
(4S)-2,5,5-trimethyl-1,3-thiazolidine-4-carboxylic acid