COc1ccc(/N=C(/SS/C(=N/c2ccc(OC)cc2)c2ccc([N+](=O)[O-])o2)c2ccc([N+](=O)[O-])o2)cc1
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?