C=C(C)C(=O)O[C@@H]1C/C(C)=C\[C@H](OC(C)=O)C[C@](C)(O)/C=C2/OC(=O)C(COC(C)=O)=C21
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?