143667-43-0 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-6-((((((2-hydroxybenzoyl)hydrazono)acetyl)amino)phenylacetyl)amino)-7-oxo-, (2S-(2-alpha,5-alpha,6-beta(S*)))-