You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2R,3R,5R)-4-amino-5-(2-aminopurin-9-yl)-2-[dideuterio(hydroxy)methyl]-4-prop-1-ynyloxolan-3-ol by IUPAC nomenclature, provide its molecular formula.
user
C13H16N6O3
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