You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(1-piperidin-4-ylethyl)-3-[3-(trifluoromethoxy)phenyl]-7,8,9,10-tetrahydro-[1,2,4]triazolo[3,4-a]phthalazin-6-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H27F3N6O
assistant