You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named [6-[2-(diaminomethylideneamino)-2-oxoethyl]naphthalen-2-yl] 4-[[(E)-(2-acetamidoethylamino)methylideneamino]methylamino]benzoate;dihydrochloride by IUPAC nomenclature, provide its molecular formula.
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C26H31Cl2N7O4
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