You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R,3R,4S,5R)-2-[6-[(3-aminophenyl)methylamino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol .
user
C17H20N6O4
assistant