You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-(2,3-dihydro-1-benzofuran-5-yl)-1H-indazol-5-yl]-2-[(3S)-1-(pyridin-2-ylmethyl)piperidin-3-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H28N4O2
assistant