5-(4-bromo-1-methyl-2,5-dioxopyrrol-3-yl)-1,3,6-trimethylpyrimidine-2,4-dione

(4aS,4bS,7aR,7bS)-4b,7a-dibromo-1,3,6,7b-tetramethyltetrahydro-1H-pyrrolo[3',4':3,4]cyclobuta[1,2-d]pyrimidine-2,4,5,7(3H,6H)-tetraone

2,4,7-trimethyl-5,6-diphenylisoindole-1,3-dione

3-bromo-4-(2,3-dihydroindol-1-yl)-1-methylpyrrole-2,5-dione

3-bromo-4-(1H-indol-2-yl)-1-methylpyrrole-2,5-dione