Synthetics
Isobutyl isovalerate has a fruity, floral, and slightly sweet scent reminiscent of many plants, often used in flavoring.
Mosciano, Gerard P&F 15, No. 2, 69, (1990): Sweet, fruity, apple and green
Luebke, William tgsc, (1989): Sweet fruity apple raspberry green banana
Alfrebro: Fruity, ethereal, apple, raspberry, wine