COC(=O)C1C(c2ccc(OC)c(OC)c2)NC(c2ccc(OC)c(OC)c2)C(C(=O)OC)S1(=O)=O
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?