OCC(O)C(OC1OC(CO)C(O)C(O)C1O)c1nn(-c2ccc(Cl)cc2)c2nc3cc(Cl)c(Cl)cc3nc12
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?