Ceftezole
(6r,7r)-8-oxo-7-[(1h-tetrazol-1-ylacetyl)amino]-3-[(1,3,4-thiadiazol-2-ylthio)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid; (6R,7R)-8-oxo-7-[(1H-tetrazol-1-ylacetyl)amino]-3-[(1,3,4-thiadiazol-2-ylsulfanyl)methyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
C13H12N8O4S3
440.4806