. "1-{2-Carboxy-7-[3-(1-carboxy-1-methyl-ethoxyimino)-3-(2-methyl-thiazol-4-yl)-2-oxo-propyl]-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-en-3-ylmethyl}-pyridinium" . "ceftazidime" . . . .