COc1ccc(C(=O)/C=C/c2ccc(OCCCOc3ccc(/C=C/C(=O)c4ccc(OC)c(OC)c4)cc3)cc2)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?