COc1ccc([C@@H]2CC=C(C(=O)O)[C@H](c3cccc(Cl)c3)N2S(=O)(=O)c2ccc(C)cc2)cc1OC
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?