(6R,7R)-7-((R)-2-(4-Ethyl-2,3-dioxo-1-piperazinylcarboxamido)-2-(4-hydroxyphenyl)acetamido)-3-((1-methyl-1H-tetrazol-5-yl)thiomethyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-en-2-carbonsaeure
Cefoperazone (substance)