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-methylphenyl)methyl]-4-[4-[(4-methylphenyl)methyl]-3-oxopyrido[2,3-b]pyrazin-2-yl]piperazine-1-carboxamide into molecular formula.
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C28H30N6O2
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