1-(4-Hydroxyiminomethyl-1-pyridinio)-3-(4-isovaleryl-1-pyridinio)-2-oxapropane 2I 2H2-O 85126-25-6 Pyridinium, 4-((hydroxyimino)methyl)-1-(((4-(3-methyl-1-oxobutyl)pyridinio)methoxy)methyl)-, diiodide, dihydrate