Cc1ccc(-n2ncc(C(=O)N3CCN(C(=O)c4ccco4)CC3)c2C2CCN(C(=O)OC(C)(C)C)CC2)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?