(5Z)-2,7,7,10-tetramethylundeca-2,5,9-trien-4-one 2,5,9-undecatrien-4-one, 2,7,7,10-tetramethyl-, (5Z)- InChI=1/C15H24O/c1-12(2)7-9-15(5,6)10-8-14(16)11-13(3)4/h7-8,10-11H,9H2,1-6H3/b10-8