benzhydryl (6R,7R)-3-[(Z)-2-(4-methyl-1,3-thiazol-5-yl)ethenyl]-8-oxo-7-[(2-phenylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

Diphenylmethyl (6R,7R)-3-[(E)-2-(4-Methyl-1,3-thiazol-5-yl)vinyl]-7-phenylacetamidoceph-3-em-4-carboxylate