CCOC(=O)O[C@@H](C)OC(=O)[C@@H]1N2C(=O)[C@@H](NC(=O)[C@@H](N)c3ccccc3)[C@H]2SC1(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?