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 ethyl 2-[2-(2-bromo-5-oxocyclohexa-1,3-dien-1-yl)-1,4-oxazin-4-yl]propanoate .
user
C15H16BrNO4
assistant