I have this tree growing in my yard and I don't know what it is. Unfortunately right now I can't upload a picture...they're all too big.

It has large, bright green, tropical-looking leaves. They have three lobes, one large (longer) lobe with one lobe on each side. It has kind of serrated edges on the leaves.

The biggest identification tool about it is that it has has red berries that turn black. They look just like raspberries/blackberries, but I know they're not b/c it's a tree.

It grows very fast and is very hardy. The leaves fall off in fall.

It has a split trunk. The trunk kind of grows the same way as a crepe myrtle, being somewhat twisted and not together.

Sorry for no picture, but does anyone has possible ideas? Thanks!