头孢替坦

(7S)-7-({[4-(2-Amino-1-Carboxy-2-Oxoethylidene)-1,3-Dithietan-2-Yl]Carbonyl}Amino)-7-(Methyloxy)-3-{[(1-Methyl-1H-Tetrazol-5-Yl)Thio]Methyl}-8-Oxo-5-Thia-1-Azabicyclo[4.2.0]Oct-2-Ene-2-Carboxylic Acid