COC(=O)Nc1nc2cc(Oc3ccc(NC(=O)Nc4cccc(C(=O)O)c4)cc3)ccc2[nH]1.Cl
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?