You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-O-(4-ethenoxybutyl) 3-O-[4-(1-prop-2-enoyloxyethoxy)butyl] benzene-1,3-dicarboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H30O8
assistant