You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-fluorophenyl)-2-[4-(3-methyl-[1,2,4]triazolo[3,4-a]phthalazin-6-yl)piperazin-1-yl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H22FN7O
assistant