You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (5S)-2-(3,4-dihydro-1H-isoquinolin-2-yl)-N-(3-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide into molecular formula.
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C23H20N6O5
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