Cc1nn(-c2ccccc2)c(Cl)c1/C=N/Nc1ccc(S(=O)(=O)Nc2ccccc2C(=O)O)cc1[N+](=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?