What exactly makes bubble gum flavoring?

What exactly makes up the classic flavor known as bubble gum?  It is certainly a made up flavor as there is no naturally occurring substance from which to reference.  A fairytale combination of chemicals creates the classic taste everyone associates with bubble gum.

So-called bubblegum flavor is a mixture of esters such as ethyl butyrate or ethyl acetate, essential oils such as wintergreen or orange, and flavoring chemicals such as ethyl maltol, maltol, benzaldehyde (cherry), and vanillin (vanilla). Most blends are proprietary and, thus, secret. No one chemical corresponds to bubblegum flavor.