CO[C@@H]1[C@@H](O)[C@@H](O)[C@H](Oc2ccc(-c3ccc(Oc4ccccc4)cc3)c(C(=O)NCCc3ccccc3)c2)OC1(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?