benzhydryl (2S,5R,6R)-3,3-dimethyl-4,7-dioxo-6-[(2-phenoxyacetyl)amino]-4, Diphenylmethyl (2S(2alpha,4beta,5alpha,6beta))-3,3-dimethyl-7-oxo-6-(phenoxyacetamido)-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate 4-oxide, Penicillin V sulfoxid-benzhydrylester, Diphenylmethyl (2S-(2alpha,5alpha,6beta))-3,3-dimethyl-7-oxo-6-(phenoxyacetamido)-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate 4-oxide, EINECS 253-558-4, EINECS 233-509-3