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 5-[3-[(Z)-2-[3-(4-carboxy-4-methylpentyl)-2-oxocyclopentyl]ethenyl]-2-oxocyclopentyl]-2,2-dimethylpentanoic acid .
user
C26H40O6
assistant