COC(=O)[C@]1(C)CC[C@@]2(C)CC[C@@]3(C)C4=CC=C5C(=CC(=O)C(O)=C5C)[C@@]4(C)CC[C@@]3(C)C2C1
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?