CC(=O)OC1CC2C(C)(C)C=CC(=O)[C@@]2(C)C2CC[C@@]3(C)C(c4ccoc4)OC(=O)C4OC43[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?