COc1ccc(/C=C2\C[C@H]3[C@@H]4CC=C5C[C@@H](OC(C)=O)CC[C@]5(C)[C@H]4CC[C@]3(C)\C2=N\O)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?