You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R,4S,6R)-8-chloro-4-ethenyl-3-hydroxy-2,4,7,14-tetramethyl-9-oxotetracyclo[5.4.3.01,8.03,6]tetradecane-6-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H29ClO4
assistant