You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(4-fluorophenyl)-5-methyl-1,3-thiazol-2-yl]-2-(1H-indol-3-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H16FN3OS
assistant