COc1ccc(NC(=O)/C(CC2=Nc3ccc([N+](=O)[O-])cc3NC2O)=N\NC(=O)C[N+](C)(C)C)c(OC)c1.[Cl-]
Molecules with a polar surface area of greater than 140 angstroms squared (Å2) tend to be poor at permeating cell membranes. What's the psa of this molecule?