You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-[2-(2-hydroxyethoxy)-2-(2-methoxyphenyl)ethyl]-5-methyl-6-(1,3-oxazol-2-yl)-2,4-dioxothieno[2,3-d]pyrimidin-3-yl]-2-methylpropanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H27N3O8S
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