CC1(C)C(O)CC[C@]2(C)C1CC[C@@]1(C)C2C(=O)C=C2[C@@H]3C[C@@](C)(C(=O)O)CC[C@@]3(C)CCC21C
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?