Cc1ccc2sc(N(CCCN(C)C)C(=O)c3ccc(S(=O)(=O)N(C)Cc4ccccc4)cc3)nc2c1C.Cl
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?