CCC[C@H]1C[C@H](C(=O)N[C@H]([C@H](C)Cl)[C@H]2O[C@@H](SC)[C@@H](O)[C@@H](O)[C@@H]2O)N(C)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?