4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-((amino-3-thienylacetyl)amino)-3-methylene-7-oxo-, (2S-(2-alpha,5-alpha,6-beta(S*)))-, trihydrate 6-(R-alpha-Amino-3-thienylacetamido)penicillanic acid 63504-05-2 BLP 875