You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 5-phenyl-N-[2-(5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-2-yl)ethyl]-1,3,4-thiadiazol-2-amine into molecular formula.
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C17H19N5S
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