C[C@]12[C@H](O)C[C@H]3[C@H](CC[C@H]4C[C@@H](O)CC[C@]43C)[C@@]1(O)CC[C@@H]2C1=CC(=O)OC1
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?