COc1ccc(C(=O)Nc2cccc(/C(C)=N/NC(=O)c3ccc([N+](=O)[O-])c(C)c3)c2)cc1OC
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?