You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(1,3-dimethyl-2,6-dioxopurin-7-yl)-N-[(Z)-(5-methylthiophen-2-yl)methylideneamino]acetamide into its molecular formula.
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C15H16N6O3S
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