You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 4-ethyl-2-methyl-1,3-oxazole;4-(5-propan-2-yl-1,3,4-thiadiazol-2-yl)-1H-pyridin-2-one is given. What is its corresponding molecular formula?
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C16H20N4O2S
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