CC1(C)C(=O)CC[C@]2(C)C3=C(CC[C@@H]12)C[C@]1(C)CC[C@H]2C(C)(C)C(=O)CC[C@]2(C)[C@H]1CC3
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?