(3aalpha,4alpha,7alpha,7aalpha)-Octahydro-4,7-methano-1H-indene 2825-83-4 4,7-Methano-1H-indene, octahydro-, (3aR,4R,7S,7aS)-rel- EINECS 220-586-3 endo-Tetrahydrodicyclopentadiene