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 N-butan-2-yl-4-(3-methylbutyl)-1,5-dioxo-2H-[1,2,4]triazolo[4,3-a]quinazoline-8-carboxamide .
user
C19H25N5O3
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