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system
Name the molecular formula for the molecule established as 5-methyl-1-[(2R,5S)-5-[(2-oxo-4H-benzo[h][1,3,2]benzodioxaphosphinin-2-yl)oxymethyl]-2,5-dihydrofuran-2-yl]pyrimidine-2,4-dione using the IUPAC nomenclature.
user
C21H19N2O7P
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