You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-[2-(4-chlorophenyl)-4-oxo-8-(4,4,4-trifluorobutyl)-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidin-6-yl]-3-oxopropanamide .
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C20H20ClF3N4O3
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