2-Dichloromethylene-3a,7a-dichloro-3a,4,7,7a-tetrahydro-4,7-methanoindene-1,3-dione 4,7-Methano-1H-indene-1,3(2H)-dione, 3a,7a-dichloro-2-(dichloromethylene)-3a,4,7,7a-tetrahydro- 55739-78-1 EF 2