You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-N-ethyl-1-N,1-N-dimethyl-2-N-[[5-(methylaminomethyl)pyridin-2-yl]methyl]propane-1,2-diamine into molecular formula.
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C15H28N4
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