Darmstadtium Ionization Energy

The Darmstadtium Ionization Energy is the energy required to remove from atom one mole of electrons with subsequent production of positively charged ion of Darmstadtium.
Ds -> Ds⁺ + e^-
This process can be repeated many times, but the energy cost is increased dramatically. The general equation for the Darmstadtium is:
Ds^N+ -> Ds^(N+1)+ + e^-

There is no data about Darmstadtium ionization energy