2-cyclopenten-1-one, 5-(2-cyclohexen-1-ylmethyl)- 5-(cyclohex-2-en-1-ylmethyl)cyclopent-2-en-1-one InChI=1/C12H16O/c13-12-8-4-7-11(12)9-10-5-2-1-3-6-10/h2,4-5,8,10-11H,1,3,6-7,9H