Epistane is a steroid, not a prohormone. No conversion needed.
It's an active hormone. It's said to be "mild", but Ive seen bloods, crashed HDL, raised LDL, liver values tripled.
If that's mild, I wonder what harsh will do to the body? (M1T, Superdrol).
Still, a cycle wont kill you, unless it's tainted with poison

Get yourself a good on-cycle support (TUDCA & NAC, great for the liver), and of course a good post-cycle.