C/C(=N/Nc1ccc([N+](=O)[O-])cc1[N+](=O)[O-])C(CC(C(=O)NCc1ccccc1)/C(C)=N\Nc1ccc([N+](=O)[O-])cc1[N+](=O)[O-])C(=O)NCc1ccccc1
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?