Oc1cc(O)c2c(c1)OC(c1ccc(O)c(O)c1)C(OC1(c3cc(O)c(O)c(O)c3)Oc3cc(O)cc(O)c3C(O)C1O)C2
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?