Cc1ccc(C(=O)Nc2cccc([N+](=O)[O-])c2)cc1S(=O)(=O)Nc1ccc(NC(=O)c2ccccc2)cc1
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?