1,2,3,4,5,6-Hexahydro-1,1,5,5-tetramethyl-7H-2,4a-methanonaphthalen-7-one 17015-42-8 23747-14-0 26839-70-3 7H-2,4a-Methanonaphthalen-7-one, 1,2,3,4,5,6-hexahydro-1,1,5,5-tetramethyl- EINECS 245-859-4