You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,3R,4R,5R)-5-[2-amino-6-(methylamino)purin-9-yl]-4-fluoro-2-(hydroxymethyl)-4-methyloxolan-3-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H17FN6O3
assistant