You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-propoxy-5-[1-(5-propoxy-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-yl)propan-2-yl]-7-oxabicyclo[4.1.0]hepta-1,3,5-triene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H24O4
assistant