The molecule is an alpha-amino-acid anion that is the conjugate base of nocardicin A, arising from deprotonation of the carboxy groups and protonation of the amino group. It is a conjugate base of a nocardicin A. It is a conjugate acid of a nocardicin A(2-).
(2R)-2-azaniumyl-4-[4-[(Z)-C-[[(3S)-1-[(R)-carboxylato-(4-hydroxyphenyl)methyl]-2-oxoazetidin-3-yl]carbamoyl]-N-hydroxycarbonimidoyl]phenoxy]butanoate