COc1ccc(-c2oc(=O)c3cc(OC)c(OC)cc3c2C#C[C@]2(O)CC[C@H]3[C@@H]4CCc5cc(OC)ccc5[C@H]4CC[C@@]32C)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?