4,8-dimethylbicyclo[3.3.1]nona-3,7-dien-2-one InChI=1/C11H14O/c1-7-3-4-9-6-10(7)11(12)5-8(9)2/h3,5,9-10H,4,6H2,1-2H bicyclo[3.3.1]nona-3,7-dien-2-one, 4,8-dimethyl-