You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[2-[(4R,5S)-3-(3-anilinopropyl)-5-pyridin-2-yl-2-sulfanylideneimidazolidin-4-yl]pyrrol-1-yl]benzoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H27N5O2S
assistant