COc1ccc(C2c3[nH]c4ccccc4c3C[C@H]3C(=O)N(c4ccccc4C(=O)N4CCC[C@@H]4C(=O)O)C(=O)N23)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?