You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named ethyl 4-[3-[3-(6-oxo-1H-pyridazin-3-yl)anilino]quinoxalin-2-yl]piperazine-1-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C25H25N7O3
assistant