Synthetics
(e)-2-heptenal smells like a fruity top note.
Mosciano, Gerard P&F 17, No. 5, 127, (1992): Intense green, fatty, oily, with fruity overtones
Luebke, William tgsc, (1989): Pungent green vegetable fresh fatty
FCI SAS: Green vegetable like odor, somewhat juicy with fatty undertone