CCCN(CCC)C(=S)Sc1nc(C)nc(N2CCN(c3nc(C)nc(SC(=S)N(CCC)CCC)c3[N+](=O)[O-])CC2)c1[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?