3-(2,4-Dimethoxy-phenyl)-5-(4-methoxy-phenyl)-1-phenyl-3a,6a-dihydro-1H-pyrrolo[3,4-c]pyrazole-4,6-dione
3-(2,4-Dimethoxy-phenyl)-5-(4-methoxy-phenyl)-1-phenyl-tetrahydro-pyrrolo[3,4-c]pyrazole-4,6-dione
3-(2,4-Dimethoxy-phenyl)-1,5-diphenyl-tetrahydro-pyrrolo[3,4-c]pyrazole-4,6-dione
2,4-Dimethoxybenzaldehyde
3-(2,4-Dimethoxy-phenyl)-5-(4-methoxy-phenyl)-1-phenyl-1H-pyrrolo[3,4-c]pyrazole-4,6-dione