You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5S)-5-[5-(3,5-dimethyl-1,2-oxazol-4-yl)-1-(1-oxothian-4-yl)benzimidazol-2-yl]-1-(3-fluoro-4-methylphenyl)pyrrolidin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H29FN4O3S
assistant