COc1ccc(/N=C2C(=N/c3ccc(OC)cc3)\N(c3ccccc3[N+](=O)[O-])C(=S)N\2c2ccc(OC)cc2)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?