CC(=O)OC1CC[C@@]2(C)C(CC[C@@]3(C)C2CC=C2C4CC(C)(C)CC[C@]4(C(=O)O)CC[C@@]23C)C1(C)C
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?