C[C@]1(C(=O)NCCCNc2ncc(C(F)(F)F)cc2Cl)C=C[C@@H](Cc2ccccc2)N1C(=O)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?