CCOC(=O)[C@@H]1[C@H]2COc3cc(OC)ccc3[C@@H]2N2C(=O)N(c3cccc(C)c3)C(=O)[C@@]12C
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?