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 [(1S,3S,4R,6S,7S,9S,10S,11R,12S,13R)-3-hydroxy-5,5,6,7,9,11-hexamethyl-14-methylidene-15-oxo-12-tetracyclo[11.2.1.01,10.04,9]hexadecanyl] acetate .
user
C25H38O4
assistant