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 [hydroxy-[hydroxy-[hydroxy-[(2-methylpropan-2-yl)oxy]phosphoryl]oxyphosphoryl]oxyphosphoryl]oxy-propan-2-ylphosphinic acid .
user
C7H20O12P4
assistant