COc1ccccc1N(C(=O)c1snc(C(N)=O)c1N)C(C(=O)NCc1ccccc1)c1ccc(O)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?