COc1ccc(-[n+]2c(-c3ccccc3)cc(-c3ccc(C)cc3)cc2-c2ccccc2)cc1.[O-][Cl+3]([O-])([O-])[O-]
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?