(2E)-2-ethylidene-3-methylcyclohex-3-en-1-one 3-cyclohexen-1-one, 2-ethylidene-3-methyl-, (2E)- InChI=1/C9H12O/c1-3-8-7(2)5-4-6-9(8)10/h3,5H,4,6H2,1-2H3/b8-3