2-(4-(2-carbamimidoylhydrazono)cyclohexa-2,5-dien-1-ylidene)hydrazinecarboxamide;(4-Oxo-2,5-cyclohexadien-1-ylideneamino)guanidine Semicarbazone;2-[4-[(Aminoiminomethyl)hydrazono]-2,5-cyclohexadien-1-ylidene]-hydrazinecarboxamide; 2-[4-[2-(Aminoiminomethyl)hydrazinylidene]-2,5-cyclohexadien-1-ylidene]hydrazinecarboxamide