2'-(4-chlorophenyl)-3-(4-chlorophenylidene)-5,10-dimethyl-12-methylene-decahydro-1,2-(1',3'-dioxocyclopenta(c))azuleno(4,5-b)furan-4,11-dione
2'-(4-chlorophenyl)-3-(4-chlorophenylidene)-5,10-dimethyl-12-methylene-decahydro-1,2-(1',3'-dioxocyclopenta(c))azuleno(4,5-b)furan-4,11-dione