CN(CC(=O)NCCc1ccc(Cl)cc1)S(=O)(=O)c1ccc2c(c1)c(=O)n(C)c(=O)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?