Lopinavir Metabolite M3-M4 (Mixture of Diastereomers) 

Chemical Name: (2S)-N-((2S,4S,5S)-5-(2-(2,6-dimethylphenoxy)acetamido)-4-hydroxy-1,6-diphenylhexan-2-yl)-2-(4-hydroxy-2-oxotetrahydropyrimidin-1(2H)-yl)-3-methylbutanamide

Smile: O=C(N[C@H](C[C@H](O)[C@@H](NC(COC(C(C)=CC=C1)=C1C)=O)CC2=CC=CC=C2)CC3=CC=CC=C3)[C@@H](N(CCC(O)N4)C4=O)C(C)C