The molecule is a cephalosporin carboxylic acid anion having a 7beta-[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino side-chain, formed by proton loss from the carboxy group of the cephalosporin cefadroxil. It is a conjugate base of a cefadroxil.
(6R,7R)-7-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate