1H-cyclopropa[a]naphthalene, 1a,2,3,5,6,7,7a,7b-octahydro-7,7a-dimethyl-1-methylene-, (1aS,7R,7aS,7bR)- 4-epi-11-nor-Aristola-1(10),11-diene InChI=1/C14H20/c1-9-5-4-6-11-7-8-12-10(2)13(12)14(9,11)3/h6,9,12-13H,2,4-5,7-8H2,1,3H3/t9-,12-,13+,14-/m1/s rel-(1aR,7S,7aR,7bS)-7,7a-dimethyl-1-methylene-1a,2,3,5,6,7,7a,7b-octahydro-1H-cyclopropa[a]naphthalene