You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[8-[2-[(2S,4S)-4-hydroxy-6-oxooxan-2-yl]ethyl]-2,2,5,7-tetramethyl-3,4-dihydrochromen-6-yl] acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H30O6
assistant