CC(C)C[C@H](NP(=O)([O-])O[C@H]1O[C@H](C)[C@@H](O)[C@H](O)[C@@H]1O)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(=O)[O-].[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?