919768-50-6

4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,3,3-dimethyl-6-[[(7R)-8-[(4-nitrophenyl)methoxy]-7-[[[(4-nitrophenyl)methoxy]carbonyl]amino]-1,8-dioxooctyl]amino]-7-oxo-, (4-nitrophenyl)methylester, (2S,5R,6R)-