CC(=O)Oc1cc(-c2oc3cc(OC(C)=O)c(C4OC(CO)C(O)C(O)C4O)c(OC(C)=O)c3c(=O)c2O)c(OC(C)=O)cc1O
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?