N''-{(1E,2E)-2-[(Diaminomethylidene)hydrazono]-1-methylethylidene}carbonohydrazonic diamide;2-[(E)-[(1E)-1-(Diaminomethylidenehydrazinylidene)propan-2-ylidene]amino]guanidine;1,1'-[(Methylethanediylidene)dinitrilo]diguanidine;2,2'-(1-Methyl-1,2-ethanediylidene)bis[hydrazinecarboximidamide;
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