COc1ccc([N+](=O)[O-])cc1NS(=O)(=O)c1ccc(Cl)c(C(=O)Nc2sc3c(c2C#N)CCCCC3)c1
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?