You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[4-propan-2-yl-5-(3,5,7-trifluoro-2-methyl-3H-1-benzofuran-2-yl)-1,2,4-triazol-3-yl]aniline The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H19F3N4O
assistant