NCCCCNCCCNC(=O)CNC(=O)CC(O)C(N)CCCC(NC(=O)C(CN)NC(=O)C(O)CNC(=O)CC(N)c1ccc(O)cc1)C(=O)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?