COC(=O)[C@@H]1CC[C@H](C)[C@@H](c2ccc(C)cc2)N1C(=O)c1ccc(/C=N\OCC[C@@H]2C=C[C@H](OC(C)=O)[C@H](COC(C)=O)O2)cc1
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?