You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-[(4-fluorophenyl)methyl]-3-[1-[2-[3-[(4-fluorophenyl)methyl]benzimidazol-3-ium-1-yl]naphthalen-1-yl]naphthalen-2-yl]benzimidazol-1-ium is given. What is its corresponding molecular formula?
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C48H34F2N4+2
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