You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-amino-5-[3-[2-[(4-carbamimidoylphenyl)methylamino]-2-oxoethyl]-5-(2-ethyl-2-methylhydrazinyl)-1-methyl-4-oxopyridin-2-yl]benzoic acid into its molecular formula.
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C26H31N7O4
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