I don't know the ins and outs of entering things in TT. However, what you have is a long-term capital loss...and ultimately belongs on Sch D. I suggest looking at the entries for for Sch D or entering dispositions of capital assets...e.g., stocks, bonds, etc.
Basically, you've disposed of stock. You have a $0.00 sales price, less your cost of purchase, would equal your long-term-capital loss.