CCOc1ccccc1NC(=O)C(=O)CC(=O)c1sc(Nc2nnc(-c3ccc(Cl)c(Cl)c3)o2)nc1C
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?