5-[[(9,10-dihydro-9,10-dioxo-1-anthryl)imino]methyl]-1,2-dihydro-6-hydroxy-4-methyl-2-oxonicotinonitrile

5-[[[(9,10-Dihydro-9,10-dioxoanthracen)-1-yl]imino]methyl]-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinecarbonitrile