You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [[(2R,3S,5R)-5-(2-amino-7-cyano-6-oxo-1,8-dihydropurin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] phosphono hydrogen phosphate into its molecular formula.
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C11H17N6O13P3
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