You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-benzyl-2-[3-(2,4-dimethylphenyl)-2,4-dioxothieno[3,2-d]pyrimidin-1-yl]-N-ethylacetamide The above is the IUPAC name of a molecule. Write its molecular formula.
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C25H25N3O3S
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