You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 5-[(1S,5R,6R,7R,9S,10R,11R)-11-bromo-8-pentacyclo[5.4.0.02,6.03,10.05,9]undecanylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione .
user
C17H17BrO4
assistant