The molecule is an amide formed between ampicillin and butylamine. It is a monocarboxylic acid amide and a thiazolidinemonocarboxylic acid. It contains an ampicilloyl group. It derives from an ampicillin.
(2R,4S)-2-[(1R)-1-[[(2R)-2-amino-2-phenylacetyl]amino]-2-(butylamino)-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid