CC(C)C(N)C(=O)NC(CCC(=O)NCCCCC(N)C(=O)NCCCNc1ccc([N+](=O)[O-])c2[nH]c3ccccc3c(=O)c12)C(N)=O.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?