1-Azetidinesulfonic acid, 3-(((((4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl)amino)(4-hydroxyphenyl)acetyl)amino)-2-oxo-, (S-(R*,S*))- 86702-45-6 Cefoperazon monobaktam Cefoperazone monobactam pdb file: 712015.pdbsdf file: 712015.sdfdirectory: 712015