You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2R,3R,4S)-4-amino-3-(butylcarbamoylamino)-2-[(1R,2R)-1,2,3-trihydroxypropyl]-3,4-dihydro-2H-pyran-6-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
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C14H25N3O7
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