1,4,4a,5,6,7,7a,8-Octahydro-4,8-methanocyclopenta(f)indazole 4,8-Methanocyclopent(f)indazole, 1,4,4a,5,6,7,7a,8-octahydro-, (4-alpha,4a-beta,7a-beta,8-alpha)- 73291-32-4 BRN 0911072