CN(C(=O)Cc1ccc(Cl)c(Cl)c1)[C@H]1CCCC[C@@H]1[N+]1(C)CCCC1.[Br-]
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?