CC(=O)OC1[C@H](Oc2c(O)c(C)c3c4c2[C@@H](C)CC[C@@H]4[C@@H](C)C[C@@H]3C=C(C)C)OC[C@@H](O)[C@@H]1O
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?