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 6-amino-4-[2-[2-(4-chloroanilino)-2-oxoethoxy]phenyl]-5-cyano-2-methyl-4H-pyran-3-carboxylate into molecular formula.
user
C24H22ClN3O5
assistant