508234-94-4

[(1R)-2-[[2-[[5-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]ethyl]amino]-2-oxo-1-[[(triphenylmethyl)thio]methyl]ethyl]carbamic Acid 1,1-Dimethylethyl Ester