Cc1cc(Cl)ccc1NC(=O)C(=O)Cc1ccc([N+](=O)[O-])c([N+](=O)[O-])c1CC(=O)C(=O)Nc1ccc(Cl)cc1C
Molecules with a polar surface area of greater than 60 angstroms squared (Å2) is hard to pass brain blood barrier. What's the psa of this molecule?