127415-96-7

1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid,6-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-3-[[(diphenoxyphosphinyl)oxy]methyl]-4-methyl-7-oxo-, (4-methoxyphenyl)methyl ester