You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
dichloro-[[2-methyl-4-(4-nitrobenzoyl)-3-oxo-1,4-benzoxazin-8-yl]methylidene]ruthenium is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H12Cl2N2O5Ru
assistant