2-Butanaminium, 4-oxo-N,N,N,2-tetramethyl-4-(2-(trimethylammonio)ethoxy)-, diiodide 2-Trimethylammonioethyl 3-methyl-3-trimethylammoniobutyrate diiodide 4-Oxo-N,N,N,2-tetramethyl-4-(2-(trimethylammonio)ethoxy)-2-butanaminium diiodide EJ4171800