Natural flavour tastes very artificial

I gave this drink to my son as a healthier alternative to juice and after one sip he told me it tasted weird. I proceeded to taste it and it had a bad aftertaste that tasted like artificial sweetener, and I am highly sensitive to them.

The ingredients state "natural flavours" and "organic natural flavours" but not all natural flavours are created equal. Here is what I learned...

"the only difference between natural and artificial flavours is their source – chemically, they're probably exactly the same. And the process of making the flavour may include solvents or other chemical ingredients, making the 'natural flavour' extremely far removed from its initial source." (source: https://www.meghantelpner.com/blog/what-is-natural-flavour-is-it-actually-natural/)

So I'd like to ask Oasis what is really in their "natural flavours" and "organic natural flavours" because I can assure you they are not 100% natural and do not taste as such. I will be calling them to inquire.