Did Nebuchadnezzar II have any sons?

In the book of Daniel the king of Babylon, Nebuchadnezzar the second, had one son called Belshazzar. Nebuchadnezzar had the dream about the statue:

Head of gold - Babylon

Breast and arms of silver - Medo and Persia

Stomach and thighs of brass (or bronze) - Greece

Legs of iron and feet of part clay and part iron - Rome

Rock - God's kingdom

And Belshazzar saw God write on the wall during his feast which was "MENE MENE TEKEL UPHARSIN".