You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-chloro-N,N-diethyl-5-phenyl-1lambda4,2-diselena-4-azacyclopenta-3,5-dien-3-amine;2-chloro-N,N-diethyl-5-phenyl-1,2lambda4-diselena-4-azacyclopenta-2,4-dien-3-amine;dichloronickel is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H30Cl4N4NiSe4
assistant