4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-((((3-methoxy-1-methyl-3-oxo-1-propenyl)amino)phenylacetyl)amino)-3,3-dimethyl-7-oxo-, monopotassium salt, (2S-(2alpha,5alpha,6beta))- 51704-19-9 EINECS 257-353-0 Potassium (2S-(2alpha,5alpha,beta))-6-((((3-methoxy-1-methyl-3-oxoprop-1-enyl)amino)phenylacetyl)amino)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate