diphenylmethyl (2S,5R)-6,6-dibromo-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4-oxide
4-oxyde du (2S,5R)-6,6-dibromo-3,3-diméthyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate de diphénylméthyle