You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[(Z)-(3-bromo-4-ethoxy-5-methoxyphenyl)methylideneamino]-6-methyl-3-methylsulfanyl-1,2,4-triazin-5-one into its molecular formula.
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C15H17BrN4O3S
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