N#CCCN(CCC#N)c1ccc(/C=C(/NC(=O)c2cc([N+](=O)[O-])ccc2Cl)C(=O)N=[N+]=[N-])cc1
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?