3-(1,3-Dioxo-2,3-dihydro-1H-inden-2-ylidene)-4,6-dioxo-5-phenyl-octahydropyrrolo[3,4-c]pyrrole-1-carboxylic acid 1g

3-(1,3-Dioxo-2,3-dihydro-1H-inden-2-ylidene)-4,6-dioxo-5-phenyl-octahydropyrrolo[3,4-c]pyrrole-1-carboxylic acid 1g