Synthetics
(e,e)-2,4-dodecadienal smells like a complex, earthy aroma reminiscent of angelica root, oxidized soybean oil, and cured ham.
Luebke, William tgsc, (1989): Grapefruit orange fatty citrus
Alfrebro: Powerful, vegetable
Bedoukian Research: An oily, fatty, dairy odor with a hint of citrus