You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-bromo-5-methoxypyridine;2-bromo-1-(5-methylpyridin-3-yl)ethanone;3-(1-ethoxyethenyl)-5-methylpyridine;methane;bromide into molecular formula.
user
C25H31Br3N3O3-
assistant