CC1=C(C(=O)Nc2ccccc2C)C(c2ccc(C(C)C)cc2)c2c(n(C)c(=O)n(C)c2=O)N1
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?