CC(C)C[C@@H](CNCC(=O)[C@H](Cc1c[nH]c2ccccc12)NC(=O)c1[nH]cnc1C(=O)N[C@@H](C)CN)NC(=O)c1[nH]cnc1C(=O)N[C@@H](CC(=O)O)C(=O)O.Cl
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?