Shopping cart rules – i am about to blow my brain out..

I need to do the following: if 3 different SKUs are added to the cart – give 5% discount to the whole order.

So if: 1x SKU A 2x SKU B 1x SKU C 1x SKU D = 5% discount on whole order

If: 3x SKU A 2x SKU B = No discount

I have tried all possible solutions, asked chatgpt, searched the world wide internet. And i just can’t figure it out. Does anyone have an idea how to acomplish this?