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 [5-(4,6-dimethylpyrimidin-2-yl)-1,3,6,6a-tetrahydropyrrolo[3,4-c]pyrrol-2-yl]-[3-(triazol-2-yl)pyridin-2-yl]methanone into molecular formula.
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C20H20N8O
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