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system
Name the molecular formula for the molecule established as [[(2R,5R)-5-[2-amino-5-[7-(methyldisulfanyl)-5-oxohept-1-ynyl]-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-7-yl]-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] phosphono hydrogen phosphate using the IUPAC nomenclature.
user
C19H27N4O14P3S2
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