O=C(O)C(F)(F)F.O=C1C(Cc2ccccc2)Nc2ncnc(N3CCN(c4ccccc4)CC3)c2N1Cc1ccc(Cl)cc1
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?