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 7-[2,2-dimethyl-1-(2-methylpropyl)cyclopropanecarbonyl]oxy-7-methyl-10-oxo-9-oxabicyclo[3.3.2]dec-5-ene-3-carboxylic acid .
user
C21H30O6
assistant