O=c1cc(-c2ccccc2)oc2cc(O[C@H]3O[C@H](CO)[C@@H](O)[C@H](O)[C@@H]3O)c(O)c(O)c12
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?