You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-O-[2-(2-methylpropanoyloxy)ethyl] 4-O-[2-(2-methylprop-2-enoyloxy)ethyl] benzene-1,4-dicarboxylate .
user
C20H24O8
assistant