COc1ccc(CCN2C(=O)C3C4C=CC(C3C2=O)C2C(=O)N(CCc3ccc(OC)c(OC)c3)C(=O)C42)cc1OC
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?