You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N'-[2-[[4-amino-5-(4-methylphenyl)-1,2,4-triazol-3-yl]sulfanyl]acetyl]-4-nitrobenzohydrazide into its molecular formula.
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C18H17N7O4S
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