C[C@H]1CC[C@@]2(NC1)O[C@@H]1C[C@@H]3[C@@H]4CC=C5C[C@@H](O)CC[C@]5(C)[C@@H]4CC[C@]3(C)[C@H]1[C@@H]2C
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?