You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[1-oxo-1-[[2-[3-(trifluoromethoxy)anilino]pyridin-3-yl]amino]propan-2-yl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H23F3N4O4
assistant