(4-{3,5-bis-[4-(tert-butoxycarbonylamino-methyl)-phenyl]-2,4,6-trioxo-[1,3,5]triazinan-1-yl}-benzyl)carbamic acid tert-butyl ester

tert-butyl 2-(1-((4-(((tert-butoxycarbonyl)amino)methyl)phenyl)carbamoyl)-4-oxoazetidin-2-yl)acetate

2-(1-((4-(((tert-butoxycarbonyl)amino)methyl)phenyl)carbamoyl)-4-oxoazetidin-2-yl)acetic acid

benzyl (2-(1-((4-(((tert-butoxycarbonyl)amino)methyl)phenyl)carbamoyl)-4-oxoazetidin-2-yl)acetyl)glycinate

(2-(1-((4-(((tert-butoxycarbonyl)amino)methyl)phenyl)carbamoyl)-4-oxoazetidin-2-yl)acetyl)glycine