You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(cyclopropylcarbamoyl)phenyl]-1-([1,2,4]triazolo[4,3-b]pyridazin-6-yl)piperidine-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H23N7O2
assistant