COCCN(C(=O)CSc1nnc(-c2ccc(C(C)(C)C)cc2)n1N)c1c(N)n(CC(C)C)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?