You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2Z)-2-[(1-ethylindol-3-yl)methylidene]-4-methyl-3-oxo-1-benzofuran-6-yl] 2-chloro-2-phenylacetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H22ClNO4
assistant