You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[5-[6-(2-fluoropyridin-3-yl)imidazo[1,2-b]pyridazin-2-yl]-2-methylphenyl]-2,2-dimethylpropanamide is given. What is its corresponding molecular formula?
user
C23H22FN5O
assistant