You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(3-chloro-4-isocyano-2-methylphenyl)-1-[3-(2-fluoro-4-pyridin-4-ylphenoxy)propyl]-5,5-dimethyl-2-sulfanylideneimidazolidin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H24ClFN4O2S
assistant