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system
Provide the molecular formula for the IUPAC named substance [[(2R,5R)-5-[2,4-dioxo-5-[(E)-3-oxo-3-[2-(7H-purin-6-ylamino)ethylamino]prop-1-enyl]pyrimidin-1-yl]-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] phosphono hydrogen phosphate .
user
C19H25N8O15P3
assistant