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 N-[9-[(2R,5S)-5-[[amino(2-cyanoethoxy)phosphoryl]oxymethyl]oxolan-2-yl]-6-oxo-1H-purin-2-yl]-2-methylpropanamide .
user
C17H24N7O6P
assistant