O=C(N1CCN(c2ccccc2)CC1)N(C(=O)C1(c2ccc(Cl)cc2)CCCC1)S(=O)(=O)c1ccccc1
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?