The molecule is amide formed between 6-aminopenicillanic acid and benzylamine. It is a monocarboxylic acid amide and a thiazolidinemonocarboxylic acid. It contains a 6-aminopenicilloyl group.
(2R,4S)-2-[(1R)-1-amino-2-(benzylamino)-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid