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-[2-methyl-5-(2-methylpropyl)thieno[2,3-d]pyrimidin-4-yl]morpholine-2-carboxamide is given. What is its corresponding molecular formula?
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C16H22N4O2S
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