You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule N-[(4,5-difluoro-1H-benzimidazol-2-yl)methyl]-2-morpholin-4-yl-9-(2-naphthalen-1-ylethyl)purin-6-amine;2,2,2-trifluoroacetic acid into molecular formula.
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C31H27F5N8O3
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