You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2Z)-N-[3-[5-chloro-2-(difluoromethoxy)phenyl]-1-[2-(3,6-dihydro-2H-pyridin-1-yl)-2-oxoethyl]pyrazol-4-yl]-2-[methylamino-[(Z)-prop-2-enylideneamino]methylidene]but-3-enamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H27ClF2N6O3
assistant