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 [(2S,3S,5R)-5-(4-benzamido-5-methyl-2-oxopyrimidin-1-yl)-2-(hydroxymethyl)oxolan-3-yl]methyl-ethoxy-oxophosphanium is given. What is its corresponding molecular formula?
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C20H25N3O6P+
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