CC1(C)CC(=O)C(C(C2=C(O)CC(C)(C)CC2=O)c2ccc([N+](=O)[O-])cc2)C(=O)C1
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?