2-Methyl 3-(2-methyl-2-propanyl) (2R,3R,5aS,10aR)-5,10-dioxooctahydro-1H,5H-dipyrrolo[1,2-a:1′,2′-d]pyrazine-2,3-dicarboxylate

(2R,3R,5aS,10aR)-5,10-Dioxooctahydro-1H,5H-dipyrrolo[1,2-a:1′,2′-d]pyrazine-2,3-dicarboxylate de 2-méthyle et de 3-(2-méthyl-2-propanyle)

1H,5H-Dipyrrolo[1,2-a:1′,2′-d]pyrazine-2,3-dicarboxylic acid, octahydro-5,10-dioxo-, 3-(1,1-dimethylethyl) 2-methyl ester, (2R,3R,5aS,10aR)-

2-Methyl 3-(2-methyl-2-propanyl) (2R,3R,5aS,10aR)-5,10-dioxooctahydro-1H,5H-dipyrrolo[1,2-a:1′,2′-d]pyrazine-2,3-dicarboxylate

2-Methyl-3-(2-methyl-2-propanyl)-(2R,3R,5aS,10aR)-5,10-dioxooctahydro-1H,5H-dipyrrolo[1,2-a:1′,2′-d]pyrazin-2,3-dicarboxylat