Why are you preparing a return in the first place?  If you have a statutory notice of deficiency, IRS has already prepared a substitute for return.  If you disagree with it, or with the proposed penalties, the next stop is Tax Court if it has been less than 90 days since the notice was issued.  But for 2017 -- I think they finished working on those, a couple years ago.  

Maybe you're trying to catch up with a state return.