You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3,4-bis[4-(dimethylamino)pyridin-1-ium-1-yl]-1-phenylpyrrole-2,5-dione;dichloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H25Cl2N5O2
assistant