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 7-[4-(diethylamino)-2-methylphenyl]imino-3-phenylpyrazolo[5,1-c][1,2,4]triazole-6-carbonitrile .
user
C22H21N7
assistant