Cc1ccc2c(c1)c1c(c(=O)n(-c3ccccc3C)c(=O)n1CC(=O)c1ccc(Cl)cc1)n2C
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?