You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule [[[5-(6-amino-2-methylsulfanylpurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]-difluoromethyl]phosphonic acid ?
user
C12H17F2N5O9P2S
assistant