You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[4-(1,1-difluoroethyl)pyridin-2-yl]methyl]-1-[2-fluoro-4-[6-[(2-pyridin-3-ylacetyl)amino]pyridazin-3-yl]butyl]triazole-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H26F3N9O2
assistant