7-Chloro-10-methyl-1-(4-methyl-1-piperazinyl)-10H-pyridazino[4,5-b][1,4]benzoxazine

7-chloro-10-Methyl-1-(4-Methylpiperazin-1-yl)-10H-benzo[b]pyridazino[4,5-e][1,4]oxazine