Nc1ncnc2c1ncn2[C@@H]1O[C@H](CNS(=O)(=O)c2cc(S(=O)(=O)c3ccccc3)cs2)[C@@H](O)[C@H]1O
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?