CCOC(=O)c1sc2c(c1OC(=O)c1ccc(Cl)cc1Cl)c(=O)n(-c1ccccc1)c(=S)n2-c1ccccc1
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?