Moexipril USP Related Compound B

Chemical Name: (S)-Ethyl 2-{(3S,11aS)-8,9-dimethoxy-3-methyl-1,4-dioxo-3,4-dihydro-1H-pyrazino[1,2-b]isoquinolin-2(6H,11H,11aH)-yl}-4-phenylbutanoate (as per USP)

Smile: O=C(OCC)[C@@H](N([C@@H](C)C1=O)C([C@@](CC2=C3)([H])N1CC2=CC(OC)=C3OC)=O)CCC4=CC=CC=C4