You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)-2-oxoethyl] 2-[(1R,2S,4S)-2-bicyclo[2.2.1]heptanyl]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H24O5
assistant