Cc1ccccc1-c1nnc(SCC(=O)N(CC(C)C)c2c(N)n(CC(C)C)c(=O)[nH]c2=O)n1C
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?