CCCCC[C@@H]1C=C(C(=O)O)[C@H](c2ccc(Cl)cc2)N1S(=O)(=O)c1ccc(C)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?