CCCCCC(=O)N1CC2(CC(c3cccc(NC(=O)[C@@H]4CCC(=O)N4)c3)=NO2)C[C@@H]1C(N)=O
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?