You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
dichloro(diethylazaniumylidene)zirconium;diethylazanide;2,3,4,5-tetrahydrofuran-5-ide is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H34Cl2N2O2Zr-2
assistant