You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(4-ethoxyphenyl)-4-(3-fluoro-4-methoxyphenyl)-1,3-thiazol-2-amine;hydrobromide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H18BrFN2O2S
assistant