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 (6R)-2-N-[2-(2,4-dimethoxyphenyl)ethyl]-5,6-dimethyl-6-N-[(4-methylphenyl)methyl]-4-oxo-7H-pyrazolo[1,5-a]pyrazine-2,6-dicarboxamide is given. What is its corresponding molecular formula?
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C28H33N5O5
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