4,7-Methano-1H-indene, 3a,4,5,6,7,7a-hexahydro- 4,7-Methanoindene, 3a,4,5,6,7,7a-hexahydro- 4488-57-7 Dihydrodicyclopentadiene NSC22462 Tricyclo[5.2.1.0(2,6)]dec-3-ene Tricyclo[5.2.1.0(2,6)]dec-4-ene