4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(hydroxyphenylmethyl)-3,3-dimethyl-7-oxo-, 4,4-dioxide, (2S-(2alpha,5alpha,6beta(R*)))- 6-(1-Hydroxy)benzylpenicillanic acid S,S-dioxide 6-(Hydroxyphenylmethyl)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid 4,4-dioxide, (2S-(2alpha,5alpha,6beta(R*)))- 78494-75-4 Ohbpso