Clc1ccc(OCc2nnc(COc3ccc(OCc4nnc(COc5ccc(Cl)cc5Cl)o4)c(Cl)c3)o2)c(Cl)c1
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?