O=C(N=Nc1c(O)[nH]c2ccccc12)c1cc(NS(=O)(=O)c2cccs2)cc(NS(=O)(=O)c2cccs2)c1
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?