7-Oxabicyclo[2.2.1]hepta-5-ene-2,3-dicarbimide

7-Oxabicyclo(2.2.1)hept-5-ene-2,3-dicarboximide

4,7-Epoxy-2,3,3a,4,7,7a-hexahydro-1H-isoindole-1,3-dione

3a,4,7,7a-Tetrahydro-4,7-epoxy-1H-isoindole-1,3(2H)-dione