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 N-[2-(methoxymethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridin-6-yl]-5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxamide into molecular formula.
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C16H20N4O2S
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