You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(5,6-difluorocyclohexa-1,3-dien-1-yl)methyl]-N-[5-[difluoro(iodo)methyl]-2-[2-(trifluoromethyl)-3,4-dihydropyridin-5-yl]phenyl]-3,5-dihydroxy-1,6,6-trimethyl-3H-pyridazine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H28F7IN4O3
assistant