CC1(C)CC(=O)C2=C(C1)NC1=C(C(=O)CC(C)(C)C1)C2c1ccc([N+](=O)[O-])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?