1-(Octahydro-7,7,8,8-tetramethyl-2,3b-methano-3bH-cyclopenta(1,3)cyclopropa(1,2)benzen-4-yl)ethanone 59056-72-3 EINECS 261-584-2 Ethanone, 1-(octahydro-7,7,8,8-tetramethyl-2,3b-methano-3bH-cyclopenta(1,3)cyclopropa(1,2)benzen-4-yl)-