4,5,6,7,8,8-Hexachloro-3a,4,7,7a-tetrahydro-4,7-methanoindan-1-one 4,7-Methanoindan-1-one, 4,5,6,7,8,8-hexachloro-3a,4,7,7a-tetrahydro- 5566-32-5