The molecule is a dicarboxylic acid, a D-serine derivative, a D-alpha-amino acid and a nocardicin. It is a conjugate acid of a nocardicin A(1-) and a nocardicin A(2-).
(2R)-2-amino-4-[4-[(Z)-C-[[(3S)-1-[(R)-carboxy-(4-hydroxyphenyl)methyl]-2-oxoazetidin-3-yl]carbamoyl]-N-hydroxycarbonimidoyl]phenoxy]butanoic acid