CCOC(=O)N1CCc2c(sc3c2c(=O)n(-c2ccc(CC)cc2)c(=O)n3CC(=O)Nc2ccc(C)cc2)C1
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?