CCCCCC(=O)N1C[C@H](n2cc(COC(=O)c3ccccc3)nn2)[C@@H](O)C[C@@H]1c1ccc(Cl)cc1
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?