1H-Naphth[2,3-d]imidazolium, 4,9-dihydro-1-isopropyl-3-methyl-4,9-dioxo-2-styryl- iodide 1H-Naphth[2,3-d]imidazolium, 4,9-dihydro-1-methyl-3-(1-methylethyl)-4,9-dioxo-2-(2-phenylethenyl)-, iodide NSC80469