CC(C)(C)[C@H]1COC(=O)[C@@H](Cc2ccc(F)cc2)C/C=C\C[C@@H](CC(=O)N[C@@H](CO)Cc2ccccc2)C(=O)N1
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?