CC1=C(C(=O)Nc2ccc([N+](=O)[O-])cc2)C(c2cccc(C(F)(F)F)c2)N=C(S)N1c1ccccc1
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?