Cc1ccc([C@H]2C(C(=O)O)=CC[C@@H](c3cccs3)N2S(=O)(=O)c2ccc(C)cc2)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?