CC[C@@H]1CN2CCc3cc(OC)c(OC)cc3[C@H]2C[C@@H]1C[C@@H]1NCCc2cc(OC)c(OC)cc21
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?