CCOC(=O)c1c(C)[nH]c(C(=O)OCC(=O)N(CC(C)C)c2c(N)n(Cc3ccccc3)c(=O)[nH]c2=O)c1C
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?