O=C(COc1ccc(OCC(=O)N/N=C/c2ccc(-c3ccc(Cl)cc3Cl)o2)c(Cl)c1)N/N=C/c1ccc(-c2ccc(Cl)cc2Cl)o1
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?