You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methoxy-N-[5-[(1-pyridazin-3-ylpiperidin-4-yl)methyl]-1,3,4-thiadiazol-2-yl]-2-[5-(trifluoromethoxy)pyridin-3-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H22F3N7O3S
assistant