C=CCC[C@@H](Cc1ccc(F)cc1)C(=O)OC[C@H](C)NC(=O)[C@@H](CC=C)CC(=O)N(CCO)Cc1ccccc1
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?