CCSc1ccc([C@@H]2[C@H]3C(=O)N(CC)C(=O)[C@H]3[C@]3(C(=O)OC)CCCCN23)cc1.O=C(O)C(F)(F)F
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?