InChI=1/C9H17N2/c1-10(2)8-6-5-7-9-11(3)4/h5-9H,1-4H3/q+ N-[(2E,4E)-5-(dimethylamino)penta-2,4-dien-1-ylidene]-N-methylmethanaminium methanaminium, N-[(2E,4E)-5-(dimethylamino)-2,4-pentadienylidene]-N-methyl-