Sorry to disagree. There are only two main ingredients in HFCS - glucose and fructose. The problem ingredient in HFCS is fructose. If you are sensitive to HFCS then you are more than likely sensitive to fructose in other high fructose foods.
The only way to tell is to eat an apple when stable and see if it give you D.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS