You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule ethyl N-[7-(4-carbamoylphenyl)-3-(3-chloro-4-fluoroanilino)furo[2,3-c]pyridin-2-yl]carbamate into molecular formula.
user
C23H18ClFN4O4
assistant