O=C(NCc1ccccc1C(F)(F)F)C12CN(Cc3ccccc3)CC1C(c1ccc([N+](=O)[O-])cc1)=NO2
Molecules with a polar surface area of greater than 140 angstroms squared (Å2) tend to be poor at permeating cell membranes. What's the psa of this molecule?