CCCN(CCC)CC(O)CN1C(=O)N(CN2C(=O)N(CC(O)CN(CCC)CCC)C(=O)C2(C)C)C(C)(C)C1=O
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?