You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(3S)-1-(3-chloro-4-fluorophenyl)-2,9-dioxodecan-3-yl]-1,3-thiazole-5-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H22ClFN2O3S
assistant