(5aS,10aS)-tetrahydrodipyrrolo[1,2-a:1',2'-d]pyrazine-3,5,8,10(2H,5aH)-tetraone;(5aS,10aS)-Dihydro-1H,5H-dipyrrolo[1,2-a:1',2'-d]pyrazine-3,5,8,10(2H,5aH,10aH)-tetrone; (-)-Dihydro-1H,5H-dipyrrolo[1,2-a:1',2'-d]pyrazine-3,5,8,10(2H,5aH,10aH)-tetrone; (5aS-cis)-Dihydro-1H,5H-dipyrrolo[1,2-a:1',2'-d]pyrazine-3,5,8,10(2H,5aH,10aH)-tetrone;L-Pyroglutamic Anhydride
