O=C1C(Cl)C2(CC(/C=C/c3ccccc3)=NN2c2cccc(S(=O)(=O)O)c2)N1c1nc2ccccc2s1
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?