You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
azanide;copper(1+);difluorocopper;fluorocopper;4-piperidin-1-id-4-ylpiperidin-1-ide;4-piperidin-1-id-4-yl-2H-pyridin-1-ide;tetrafluorogermane is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H36Cu4F7GeN6-4
assistant