C[N+](C)(C)CC(=O)N/N=C(\C(=O)Nc1ccc(Cl)cc1)C1C(=O)N(c2ccccc2)N=C1N.[Cl-]
Molecules with a polar surface area of greater than 60 angstroms squared (Å2) is hard to pass brain blood barrier. What's the psa of this molecule?