Benzo[g]quinoxaline-2,5,10(1H)-trione, 5,10-dihydro-3-[[(4-nitrophenyl)hydrazono]methyl]- Benzo[g]quinoxaline-2-carboxaldehyde, 3,4,5,10-tetrahydro-3,5,10-trioxo-,(4-nitrophenyl)hydrazone NSC713198