COc1ccc(C(=O)C(CC2C(=O)CC(C)(C)C(C(=O)C(=O)Nc3c(C)cccc3C)C2=O)c2ccc(OC)cc2)cc1
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?