C=C(C)C(=O)O[C@H]1[C@@H]2[C@H](C)C(=O)O[C@@H]2[C@H](O)[C@@H](C)[C@@H]2C=CC(=O)[C@]21C
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?