CCC(C)(C)C1CCc2nc3ccccc3c(C(=O)OC(C)C(=O)Nc3c(C)n(C)n(-c4ccccc4)c3=O)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?