COc1ccc2[nH]cc([C@@H]3C4CCC(C4)[C@H]3NCc3cccc(CN[C@H]4C5CCC(C5)[C@@H]4c4c[nH]c5ccc(OC)cc45)c3)c2c1
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?