C=CCC[C@H](Cc1ccc(F)cc1)C(=O)OC[C@@H](NC(=O)[C@H](CC=C)CC(=O)NCCO)c1ccccc1
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?