You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(4R)-1-(3-chloro-4-methoxyphenyl)-3-[(2-fluorophenyl)methyl]-5-oxo-2-sulfanylideneimidazolidin-4-yl]-N-(4-propoxyphenyl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H27ClFN3O4S
assistant