You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(5-pyridin-2-yl-1,4-diaza-2-azanidacyclopenta-3,5-dien-3-yl)pyridine;2-pyridin-2-ylpyridine;ruthenium(2+) is the IUPAC name of a molecule. Please give its molecular formula.
user
C32H24N9Ru+
assistant