COc1cc(/C=C2\C(=O)N(c3ccc(Cl)cc3)C(c3ccccc3)S2(=O)=O)cc(OC)c1OC
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?