O=C(C[C@H]1C/C=C/CC[C@H](Cc2ccc(F)cc2)C(=O)O[C@H](c2ccccc2)CNC1=O)NCCO
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?