CC(=O)OCC(=O)[C@@]12OC(C)(C)O[C@@H]1C[C@H]1[C@@H]3CC(C=O)=C4C=C(OCCCl)CC[C@]4(C)[C@@]3(F)[C@@H](O)C[C@@]12C
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?