8,9-diamino-3-methyl-2,3,4,5-tetrahydro-1H,7H-pyrazolo[1,2-a][1,2,5]triazepin-7-one methanesulfonate

9-amino-8-[(2-amino-3-chloro-5-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)amino]-3-methyl-2,3,4,5-tetrahydro-1H,7H-pyrazolo[1,2-a][1,2,5]triazepin-7-one