Carfilzomib Impurity 69

Chemical Name: (S)-2-((S)-2-Acetamido-4-phenylbutanamido)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)pentanamide

Smile: O=C([C@]1(CO1)C)[C@H](CC(C)C)NC([C@@H](NC([C@H](CC(C)C)NC([C@@H](NC(C)=O)CCC2=CC=CC=C2)=O)=O)CC3=CC=CC=C3)=O