You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[5-[(Z)-(5-chloro-2-oxo-1H-indol-3-ylidene)methyl]furan-2-yl]-3-fluorobenzoic acid;methyl 4-[5-[(Z)-(5-chloro-2-oxo-1H-indol-3-ylidene)methyl]furan-2-yl]-3-fluorobenzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C41H24Cl2F2N2O8
assistant