COc1cc(OC)c2c(c1C(CCN1CCN(c3ccccc3)CC1)c1ccc(N(C)C)cc1)OC(=O)CC2c1ccc(N(C)C)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?