(5E)-2,7,7,10-tetramethylundeca-5,9-dien-4-one 5,9-undecadien-4-one, 2,7,7,10-tetramethyl-, (5E)- InChI=1/C15H26O/c1-12(2)7-9-15(5,6)10-8-14(16)11-13(3)4/h7-8,10,13H,9,11H2,1-6H3/b10-8