COC(=O)/C=C(\S/C(=C(/c1ccc(OC)cc1)n1cc(C(=O)OC)c(C(=O)OC)n1)c1ccc(OC)cc1)C(=O)OC
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?