You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule ethyl 3-[(3R,4S)-4-methyl-3-(3-methylbut-2-enyl)-4-(4-methylpent-3-enyl)-2,6-dioxocyclohexyl]propanoate .
user
C23H36O4
assistant