COc1cc(C2SCC(=O)N2c2ccc(NC(=O)c3ccc(N4C(=O)CSC4c4cc(OC)c(OC)c(OC)c4)cc3)cc2)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?