CC(=O)OC1CC[C@]2(C)C(CC(OC(C)=O)[C@@]3(C)C4=CC(=O)OC(c5ccoc5)[C@]4(C)CCC23)C1(C)C
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?