Cc1ccc(N(CN2C(=O)c3ccccc3C2=O)C(=O)c2ccc([N+](=O)[O-])cc2[N+](=O)[O-])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?