You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule methyl 3-[(1R,4S,5R,6R,9R)-5-methyl-10-methylidene-11-oxo-4-prop-1-en-2-yl-5-tricyclo[7.2.1.01,6]dodecanyl]propanoate ?
user
C21H30O3
assistant