You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[1-[2-(2-ethoxyphenyl)-2-propan-2-yloxyethyl]-5-methyl-6-(1,3-oxazol-2-yl)-2,4-dioxothieno[2,3-d]pyrimidin-3-yl]-2-methylpropanoic acid by IUPAC nomenclature, provide its molecular formula.
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C27H31N3O7S
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