{(2R,3S)-2-(2-Allyloxycarbonylamino-ethylsulfanylthiocarbonylsulfanyl)-4-oxo-3-[(R)-1-(2,2,2-trichloro-ethoxycarbonyloxy)-ethyl]-azetidin-1-yl}-hydroxy-acetic acid allyl ester

N-<(allyloxy)carbonyl>cysteamine

potassium 2-(((allyloxy)carbonyl)amino)ethyl carbonotrithioate