You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [5-carbamothioyl-8-fluoro-8-methyl-4-phenyl-3-(quinoxaline-2-carbonylamino)nonan-3-yl] acetate into molecular formula.
user
C28H33FN4O3S
assistant