Cc1ccc(S(=O)(=O)N2[C@H](c3cccc(Cl)c3)CC(=O)[C@@H]3CN(S(=O)(=O)c4ccccc4C)[C@H](c4ccc(Cl)cc4)C[C@@H]32)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?