You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 6-ethyl-2,7-di(propan-2-yl)-1H-[1,2,4]triazolo[4,3-a]pyrimidine-3,5-dione .
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C13H20N4O2
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