Cc1n(CC(=O)c2ccc([N+](=O)[O-])cc2)c2c([n+]1CC(C)C)C(=O)c1ccccc1C2=O.[Br-]
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?