N#CC(/C(=N/NC(=N)N)C(=O)Nc1ccccc1[N+](=O)[O-])c1nc(-c2ccc([N+](=O)[O-])cc2)cs1
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?