You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N'-[(1,3-dimethylimidazol-2-ylidene)amino]-N-[1-[methyl-[(Z)-2-(methylamino)ethenyl]amino]ethenylimino]methanimidamide into its molecular formula.
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C12H20N8
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