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 propan-2-yl 2-[[[(2S,4S,5R)-5-[2-amino-6-(methylamino)purin-9-yl]-4-methyloxolan-2-yl]methoxy-benzylphosphoryl]amino]propanoate .
user
C25H36N7O5P
assistant