CC(C)(C)OC(=O)CNC(=O)c1[nH]cnc1C(=O)N[C@@H](Cc1ccccc1)C(=O)OC(C)(C)C
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?