COc1cc(/C=C2\C(C)=NN(c3cccc(Cl)c3)C23C(Cl)C(=O)N3c2nc3ccccc3s2)ccc1O
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?