COc1ccc(Cl)cc1NC(=O)Cn1c(=O)n(Cc2ccco2)c(=O)c2ccc(C(=O)NC3CCCC3)cc21
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?