You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1S,2R,3S,4R,5S)-4-(6-amino-2-chloropurin-9-yl)-2,3-dihydroxy-N-methylbicyclo[3.1.0]hexane-1-carboxamide into its molecular formula.
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C13H15ClN6O3
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