1H-inden-1-one, octahydro-5,5-dimethyl-4-methylene-, (3aS,7aS)- InChI=1/C12H18O/c1-8-9-4-5-11(13)10(9)6-7-12(8,2)3/h9-10H,1,4-7H2,2-3H3/t9-,10+/m1/s rel-(3aR,7aR)-5,5-dimethyl-4-methyleneoctahydro-1H-inden-1-one