英文别名
Methyl 4-[1-[2-[(4-nitrophenyl)methoxy]-2-oxo-1-(triphenyl-lambda5-phosphanylidene)ethyl]-4-oxoazetidin-2-yl]sulfanyl-4-oxobutanoate;methyl 4-[1-[2-[(4-nitrophenyl)methoxy]-2-oxo-1-(triphenyl-λ5-phosphanylidene)ethyl]-4-oxoazetidin-2-yl]sulfanyl-4-oxobutanoate