4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(((((2,3-dihydro-4-methyl-3-oxo-1H-pyrazol-1-yl)carbonyl)amino)phenylacetyl)amino)-3,3-dimethyl-7-oxo-, monosodium salt, (2S-(2alpha,5alpha,6beta(S*)))- 54944-56-8 EINECS 259-401-6