You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(2S)-2-[(3S,4S,6S)-5-acetyloxy-3,4-dimethyl-6-phosphonooxyoxan-2-yl]-2-fluoroethyl] acetate into molecular formula.
user
C13H22FO9P
assistant