(4-NITROPHENYL)METHYL (4S,5R,6S)-3-((DIPHENOXYPHOSPHINYL)OXY)-6-((1R)-1-HYDROXYETHYL)-4-METHYL-7-OXO-1-AZABICYCLO(3.2.0)HEPT-2-ENE-2-CARBOXYLATE
(4-nitrophenyl)methyl (4s,5r,6s)-3-((diphenoxyphosphinyl)oxy)-6-((1r)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo(3.2.0)hept-2-ene-2-carboxylate