CC(=O)OCC1OC(O[C@@H]2C[C@H]3C(C)(C)[C@H](OC(C)=O)CC[C@]3(C)[C@H]3CC[C@@]45C[C@H](O)C[C@H](C)[C@@H]4CC=C5[C@]23C)C(O)C(O)C1O
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?