Cc1c(C)c(C)c(-n2c(=O)n(C)c(=O)n2-c2cc(C(C)(C)C)cc(C(C)(C)C)c2O)c(C)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?