You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 6-pyridin-2-yl-2-(thiophen-2-ylmethyl)imidazo[2,1-b][1,3,4]thiadiazole-5-carbonitrile into its molecular formula.
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C15H9N5S2
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