C=CCC1OC(=O)CCNC(=O)C(C)N(C)C(=O)C(C(C)C)N(C)C(=O)C(C(C)CC)NC(=O)C2CCCN2C1=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?