COc1ccc(C(=O)NC2(C(F)(F)F)C(=O)N(Cc3ccco3)C3=C2C(=O)CC(C)(C)C3)cc1OC
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?