CCOC(=O)c1c(NC(=O)C(C)Sc2cn(CCNC(=O)c3ccccc3OC)c3ccccc23)sc2c1CCC2
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?