N=C1/C(=C\c2ccc(-c3cc(Cl)cc(Cl)c3)o2)C(=O)N=C2SC=C(c3ccccc3)N12
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?