You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named iridium;1-(4-phenylbenzene-6-id-1-yl)-3-(4-phenylphenyl)-2H-benzimidazol-2-ide;1-phenyl-3-phenyl-2H-benzimidazol-2-ide;1-phenyl-3-phenyl-2H-imidazo[4,5-b]pyrazin-2-ide;1-phenyl-3-phenyl-2H-imidazo[4,5-b]quinoxalin-2-ide is given. What is its corresponding molecular formula?
user
C168H116Ir4N28-16
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