COc1cccc(-c2cccc(-c3nc(C(=O)NCc4ccc(Oc5ccccc5)cc4)cc4c3[C@H](CCO)N([S+]([O-])C(C)(C)C)C4)c2)c1
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?