Chemical Name: (αS,3S,11aS)-1,3,4,6,11,11a-Hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)-2H-pyrazino[1,2-b]isoquinoline-2-acetic Acid
Synonym: Quinapril USP Related Compound A ; Quinapril Diketopiperazine
Smiles: [H][C@]1(C2=O)N(CC(C=CC=C3)=C3C1)C([C@H](C)N2[C@H](C(OCC)=O)CCC4=CC=CC=C4)=O
Inchi: InChI=1S/C23H26N2O5/c1-15(24-19(22(27)28)12-11-16-7-3-2-4-8-16)21(26)25-14-18-10-6-5-9-17(18)13-20(25)23(29)30/h2-10,15,19-20,24H,11-14H2,1H3,(H,27,28)(H,29,30)/t15-,19-,20-/m0/s1