You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(2R,4R,5R)-5-(2,2-dimethylpropyl)-4-[hydroxy-[(2-methylpropan-2-yl)oxy]phosphinothioyl]oxyoxolan-2-yl]-5-methylpyrimidine-2,4-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H31N2O6PS
assistant