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-[2-[2-[8-[(3S)-3-aminopiperidin-1-yl]-7-[(E)-but-2-enyl]-3-methyl-2,6-dioxopurin-1-yl]acetyl]phenoxy]-N-methylacetamide by IUPAC nomenclature, provide its molecular formula.
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C26H33N7O5
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