COCCN(C(=O)COC(=O)C(c1ccccc1)c1ccccc1)c1c(N)n(Cc2ccccc2)c(=O)[nH]c1=O
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?