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 [2-[2-methyl-6-(methylamino)pyrimidin-4-yl]pyrrolidin-1-yl]-thiophen-3-ylmethanone is given. What is its corresponding molecular formula?
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C15H18N4OS
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