Cc1ccc(Cl)cc1NC(=O)Cn1c(=O)n(Cc2ccc(C(=O)NCc3ccc4c(c3)OCO4)cc2)c(=O)c2ccccc21
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?