You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(4-benzoylpiperazin-1-yl)-2-(4-fluorophenyl)quinoxaline-6-carboxylic acid;methyl 3-(4-benzoylpiperazin-1-yl)-2-(4-fluorophenyl)quinoxaline-6-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C53H44F2N8O6
assistant