2-butanone, 4-(2,6,6-trimethyl-1-cyclohexen-1-yl)- 4-(2,6,6-trimethylcyclohex-1-en-1-yl)butan-2-one InChI=1/C13H22O/c1-10-6-5-9-13(3,4)12(10)8-7-11(2)14/h5-9H2,1-4H