COC(=O)/C=C/C(=O)Nc1cc(Cl)c(Cl)cc1CC(=O)N(C)[C@H]1CCCC[C@@H]1N1CCCC1
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?