2,2-Dimethyl-6beta-phenylacetamidopenam-3alpha-ol S-oxide 41536-84-9 Benzeneacetamide, N-(2-hydroxy-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)hept-6-yl)-, S-oxide, (2S-(2alpha,4beta,5alpha,6beta))-