4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-((3-(2-chlorophenyl)-2-(methylthio)-1-oxo-2-propenyl)amino)-3,3-dimethyl-7-oxo-, monosodium salt, (2S-(2alpha,5alpha,6beta(Z)))- 4414-51-1 Thiocillin