CCOC(=O)C(C)CC(C)C(=O)N1CCOCCOCCN(C(=O)C(C)CC(C)C(=O)OCC)CCOCC1
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?