CC(=O)N1[C@@H]2CC3C4CC=C5C[C@@H](O)CC[C@]5(C)C4CC[C@]3(C)[C@@]21C(C)=O
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?