CSc1nc(N)c2ncn([C@@H]3O[C@@H](COP(=O)([O-])OP(=O)([O-])[O-])[C@@H](O)[C@H]3O)c2n1.[Na+].[Na+].[Na+]
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?