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 tert-butyl 3-(7-chloro-1-methyl-2-oxo-4H-pyrimido[4,5-d]pyrimidin-3-yl)-4-methylbenzoate;tert-butyl 4-methyl-3-[1-methyl-7-[(6-methylpyridin-3-yl)amino]-2-oxo-4H-pyrimido[4,5-d]pyrimidin-3-yl]benzoate;4-methyl-3-[1-methyl-7-[(6-methylpyridin-3-yl)amino]-2-oxo-4H-pyrimido[4,5-d]pyrimidin-3-yl]benzoic acid is given. What is its corresponding molecular formula?
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C65H69ClN16O9
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