You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[[6-[[4-(4-acetylpiperazin-1-yl)phenyl]methylamino]pyridazin-3-yl]oxymethyl]-5-(trifluoromethoxy)benzonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H25F3N6O3
assistant