C[C@H](O)[C@@H]1C(=O)N2CCc3c([nH]c4ccccc34)[C@@H]2C[C@@H]1N(C)C(=O)c1cc(Cl)cc(Cl)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?