Cefprozil Monohydrate EP Impurity E

Chemical Name: (6R,7R)-7-[[(2R)-2-amino-2-[4-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]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: OC1=CC=C([C@@]([H])(N)C(OC2=CC=C([C@](N)([H])C(N[C@@]3([H])[C@](SCC(/C=C\C)=C4C(O)=O)([H])N4C3=O)=O)C=C2)=O)C=C1