You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[(E)-3-(5-methoxy-2,3-dihydro-1,4-benzodioxin-7-yl)prop-2-enoyl]phenoxy]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H17O7-
assistant