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-[[1-(4-fluorophenyl)-5-methylpyrazol-4-yl]methyl]-2-propan-2-yl-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-one .
user
C21H24FN5O
assistant