Cefprozil EP Impurity H

: Cefprozil USP Related Compound H; (6R,7R)-7-[[(2R)-2-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3-[(1Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ;