COc1cc(/C=C/C(=O)OCC(=O)Nc2ccc(NC(C)=O)cc2)cc(S(=O)(=O)N2CCc3ccccc32)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?