C[C@@H]1[C@H]2C=C[C@@H]1[C@@H](c1c3ccc(=O)c(O)c-3oc3c(O)c(O)ccc13)[C@@H]2C(=O)O
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?