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 N-ethyl-1-methyl-5-(2-phenyl-[1,2,4]triazolo[1,5-a]pyridin-7-yl)pyrazole-4-carboxamide;formamide .
user
C20H21N7O2
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