COC(=O)N1[C@H](C)C=C[C@]1(Cc1ccccc1)C(=O)NCCCNc1ncc(C(F)(F)F)cc1Cl
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?