You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
dimethyl 4-(3-ethoxy-4-hydroxy-5-nitrophenyl)-1-[(4-fluorophenyl)methyl]-4H-pyridine-3,5-dicarboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H23FN2O8
assistant