Cefprozil Monohydrate EP Impurity M

Chemical Name: (6R,7R)-7-[[(2R)-2-amino-2-[4-[(ethoxycarbonyl)oxy]phenyl]acetyl]amino]-8-oxo-3-[(1Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (as per EP)

Smile: OC(C1=C(/C=C\C)CS[C@](N1C2=O)([H])[C@]2([H])NC([C@]([H])(N)C3=CC=C(OC(OCC)=O)C=C3)=O)=O