COc1cc(-c2cccc([C@H]3[C@@H]4C=CC[C@@H](C)[C@@H]4C(=O)N3Cc3ccccc3)c2)cc(OC)c1OC
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?