You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (5E)-1-(4-bromophenyl)-5-[(2,2-dimethyl-3H-1-benzofuran-5-yl)methylidene]-1,3-diazinane-2,4,6-trione ?
user
C21H17BrN2O4
assistant