O=C(CSc1ncc2c(n1)-c1cc(Cl)ccc1N(Cc1ccccc1)S2(=O)=O)Nc1ccc(F)cc1F
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?