COc1ccc(CN2C(=O)[C@@H]3Cc4c(OC)c(C)c(OC)c(OC)c4[C@H](/C2=C\c2cc(OC)c(OC)c(C)c2OC)N3C(=O)OC(C)C)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?