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-[(5-bromo-2-hydroxy-3,6-dimethylphenyl)methylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione .
user
C15H15BrO5
assistant