Chests in structures with random chosen loot table?

is it possible to make chests in my structures spawn with chests that have randomly chosen loot tables?

when I put a chest WITH items IN MY STRUCTURES it spawned without items at all,

which gives me an idea if it's not possible, to read the items in the chest before that and put it as randomly chosen loot maybe?

ex:

2 steak in a chest in 1 slot, 1 steak in a different slot, and a sand block in another slot,

when the structure spawns after it's been imported it has a chance to spawn with either 2 steak or 1 steak or 1 sand, or maybe all