| Synonyms: | 1,14-dimethyl-4,10-dioxatetracyclo[5.5.2.0~2,6~.0~8,12~]tetradec-13-ene-3,5,9,11-tet;1,8-DIMETHYLBICYCLO(2,2,2)OCT-7-ENE-2,3,5,6-TETRACARBOXYLIC ACID DIANHYDRIDE;1,8-Dimethylbicyclo[2.2.2]octa-7-ene-2,3,5,6-tetracarboxylic acid 2,3:5,6-dianhydride;3a,4,4a,7a,8,8a-Hexahydro-4,9-dimethyl-4,8-etheno-1H,3H-benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone;1,14-DIMETHYL-4,10-DIOXATETRACYCLO[5.5.2.0(2,6).0(8,12)]TETRADEC-13-ENE-3,5,9,11-TETRAONE;4,8-Etheno-1H,3H-benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone, 3a,4,4a,7a,8,8a-hexahydro-4,9-dimethyl- |