COc1ccc(COC(=O)N/N=C2/C[C@@H](O)[C@@H](O)[C@@H]3[C@@H]4C(=O)N(C5CCCCC5)C(=O)[C@H]4CC[C@@H]23)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?