1,4,5,6,7,8,8-Heptachloro-3a,4,5,6,7,7a-hexahydro-4,7-methano-1H-indene 30913-64-5 4,7-Methano-1H-indene, 1,4,5,6,7,8,8-heptachloro-3a,4,5,6,7,7a-hexahydro-