You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl (3R)-3-[[7-chloro-6-fluoro-1-(4-methyl-2-propan-2-ylpyridin-3-yl)-2,4-dioxopyrido[2,3-d]pyrimidin-5-yl]oxymethyl]piperazine-1-carboxylate;tert-butyl (3R)-3-(hydroxymethyl)piperazine-1-carboxylate;7-chloro-6-fluoro-1-(4-methyl-2-propan-2-ylpyridin-3-yl)-5-methylsulfonylpyrido[2,3-d]pyrimidine-2,4-dione by IUPAC nomenclature, provide its molecular formula.
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C53H68Cl2F2N12O12S
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