COc1ccc(OC)c(NC(=O)CCC/C(CC(=O)c2ccc(O)c(OC)c2)=N\NC(=O)C[N+](C)(C)C)c1.[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?