CCC(C(=O)C(=O)C(CC)P1(=O)OC(C)(C)CN1C(C)(C)C)P1(=O)OC(C)(C)CN1C(C)(C)C
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?